121211112010122 has 48 divisors (see below), whose sum is σ = 267344521543008. Its totient is φ = 39679541828640.

The previous prime is 121211112010111. The next prime is 121211112010123. The reversal of 121211112010122 is 221010211112121.

It is a happy number.

121211112010122 is a `hidden beast` number, since 121 + 211 + 11 + 201 + 0 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121211112010095 and 121211112010104.

It is not an unprimeable number, because it can be changed into a prime (121211112010123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85135848 + ... + 86547875.

It is an arithmetic number, because the mean of its divisors is an integer number (5569677532146).

Almost surely, 2^{121211112010122} is an apocalyptic number.

121211112010122 is an abundant number, since it is smaller than the sum of its proper divisors (146133409532886).

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

121211112010122 is a wasteful number, since it uses less digits than its factorization.

121211112010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171684435 (or 171684432 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121211112010122 its reverse (221010211112121), we get a palindrome (342221323122243).

The spelling of 121211112010122 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred twelve million, ten thousand, one hundred twenty-two".