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12210312011210 = 251971905138029
BaseRepresentation
bin1011000110101110111101…
…0011110101110111001010
31121020021221122020020022222
42301223233103311313022
53100023204333324320
641545201230214042
72400110625425105
oct261535723656712
947207848206288
1012210312011210
113988400898715
121452534954322
136a7573241131
14302da744173c
15162941835825
hexb1aef4f5dca

12210312011210 has 32 divisors (see below), whose sum is σ = 23461177737600. Its totient is φ = 4561895661120.

The previous prime is 12210312011179. The next prime is 12210312011297. The reversal of 12210312011210 is 1211021301221.

It is a happy number.

It is a super-2 number, since 2×122103120112102 (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452555525 + ... + 452582504.

It is an arithmetic number, because the mean of its divisors is an integer number (733161804300).

Almost surely, 212210312011210 is an apocalyptic number.

12210312011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12210312011210 is a deficient number, since it is larger than the sum of its proper divisors (11250865726390).

12210312011210 is a wasteful number, since it uses less digits than its factorization.

12210312011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905138126.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12210312011210 its reverse (1211021301221), we get a palindrome (13421333312431).

The spelling of 12210312011210 in words is "twelve trillion, two hundred ten billion, three hundred twelve million, eleven thousand, two hundred ten".

Divisors: 1 2 5 10 19 38 71 95 142 190 355 710 1349 2698 6745 13490 905138029 1810276058 4525690145 9051380290 17197622551 34395245102 64264800059 85988112755 128529600118 171976225510 321324000295 642648000590 1221031201121 2442062402242 6105156005605 12210312011210