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12200200201220 = 2251973866980077
BaseRepresentation
bin1011000110001001010010…
…0110010110010000000100
31121012022211221002001201212
42301202110212112100010
53044342002222414340
641540410011110552
72366302222442363
oct261422446262004
947168757061655
1012200200201220
113984091a56159
121450592442458
136a6621336805
143026c84d57da
1516254dc3da65
hexb1894996404

12200200201220 has 48 divisors (see below), whose sum is σ = 25751460818160. Its totient is φ = 4855121908224.

The previous prime is 12200200201219. The next prime is 12200200201261. The reversal of 12200200201220 is 2210200200221.

It can be written as a sum of positive squares in 8 ways, for example, as 9264832516 + 12190935368704 = 96254^2 + 3491552^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12200200201195 and 12200200201204.

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, 152315822 + ... + 152395898.

It is an arithmetic number, because the mean of its divisors is an integer number (536488767045).

Almost surely, 212200200201220 is an apocalyptic number.

12200200201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12200200201220 is an abundant number, since it is smaller than the sum of its proper divisors (13551260616940).

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

12200200201220 is a wasteful number, since it uses less digits than its factorization.

12200200201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118952 (or 118950 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12200200201220 its reverse (2210200200221), we get a palindrome (14410400401441).

Subtracting from 12200200201220 its reverse (2210200200221), we obtain a palindrome (9990000000999).

The spelling of 12200200201220 in words is "twelve trillion, two hundred billion, two hundred million, two hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 197 394 788 985 1970 3940 38669 77338 80077 154676 160154 193345 320308 386690 400385 773380 800770 1601540 7617793 15235586 15775169 30471172 31550338 38088965 63100676 76177930 78875845 152355860 157751690 315503380 3096497513 6192995026 12385990052 15482487565 30964975130 61929950260 610010010061 1220020020122 2440040040244 3050050050305 6100100100610 12200200201220