121202221112112 has 80 divisors (see below), whose sum is σ = 357887504448000. Its totient is φ = 34624137440256.

The previous prime is 121202221112111. The next prime is 121202221112173. The reversal of 121202221112112 is 211211122202121.

121202221112112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (121202221112111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24099612 + ... + 28691387.

It is an arithmetic number, because the mean of its divisors is an integer number (4473593805600).

Almost surely, 2^{121202221112112} is an apocalyptic number.

121202221112112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121202221112112 is an abundant number, since it is smaller than the sum of its proper divisors (236685283335888).

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

121202221112112 is a wasteful number, since it uses less digits than its factorization.

121202221112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52797850 (or 52797844 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 121202221112112 its reverse (211211122202121), we get a palindrome (332413343314233).

The spelling of 121202221112112 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twelve".