121220102112200 has 96 divisors (see below), whose sum is σ = 346875984557760. Its totient is φ = 38364164179200.

The previous prime is 121220102112191. The next prime is 121220102112229. The reversal of 121220102112200 is 2211201022121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3330204386 + ... + 3330240785.

It is an arithmetic number, because the mean of its divisors is an integer number (3613291505810).

Almost surely, 2^{121220102112200} is an apocalyptic number.

121220102112200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121220102112200 is an abundant number, since it is smaller than the sum of its proper divisors (225655882445560).

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

121220102112200 is a wasteful number, since it uses less digits than its factorization.

121220102112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660445207 (or 6660445198 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121220102112200 its reverse (2211201022121), we get a palindrome (123431303134321).

The spelling of 121220102112200 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred two million, one hundred twelve thousand, two hundred".