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12202222220220 = 22351731385902031
BaseRepresentation
bin1011000110010000110100…
…0111101111001110111100
31121012112001211212021100110
42301210031013233032330
53044410122342021340
641541342402030020
72366403304352454
oct261441507571674
947175054767313
1012202222220220
113984a2a371a3a
121450a57648310
136a6884220266
1430283ac82d64
1516261b500680
hexb190d1ef3bc

12202222220220 has 96 divisors (see below), whose sum is σ = 37342967832576. Its totient is φ = 2963727590400.

The previous prime is 12202222220197. The next prime is 12202222220297. The reversal of 12202222220220 is 2202222220221.

It is a super-2 number, since 2×122022222202202 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192919396 + ... + 192982635.

It is an arithmetic number, because the mean of its divisors is an integer number (388989248256).

Almost surely, 212202222220220 is an apocalyptic number.

12202222220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12202222220220 is an abundant number, since it is smaller than the sum of its proper divisors (25140745612356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12202222220220 is a wasteful number, since it uses less digits than its factorization.

12202222220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385902091 (or 385902089 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 12202222220220 its reverse (2202222220221), we get a palindrome (14404444440441).

Subtracting from 12202222220220 its reverse (2202222220221), we obtain a palindrome (9999999999999).

The spelling of 12202222220220 in words is "twelve trillion, two hundred two billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 31 34 51 60 62 68 85 93 102 124 155 170 186 204 255 310 340 372 465 510 527 620 930 1020 1054 1581 1860 2108 2635 3162 5270 6324 7905 10540 15810 31620 385902031 771804062 1157706093 1543608124 1929510155 2315412186 3859020310 4630824372 5788530465 6560334527 7718040620 11577060930 11962962961 13120669054 19681003581 23154121860 23925925922 26241338108 32801672635 35888888883 39362007162 47851851844 59814814805 65603345270 71777777766 78724014324 98405017905 119629629610 131206690540 143555555532 179444444415 196810035810 203370370337 239259259220 358888888830 393620071620 406740740674 610111111011 717777777660 813481481348 1016851851685 1220222222022 2033703703370 2440444444044 3050555555055 4067407406740 6101111110110 12202222220220