122221010121 has 24 divisors (see below), whose sum is σ = 189584635680. Its totient is φ = 69834183552.

The previous prime is 122221010059. The next prime is 122221010141. The reversal of 122221010121 is 121010122221.

It is not a de Polignac number, because 122221010121 - 2²⁹ = 121684139209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122221010121.

It is not an unprimeable number, because it can be changed into a prime (122221010141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1911745 + ... + 1974641.

It is an arithmetic number, because the mean of its divisors is an integer number (7899359820).

Almost surely, 2^122221010121 is an apocalyptic number.

It is an amenable number.

122221010121 is a deficient number, since it is larger than the sum of its proper divisors (67363625559).

122221010121 is a wasteful number, since it uses less digits than its factorization.

122221010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76133 (or 76126 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122221010121 its reverse (121010122221), we get a palindrome (243231132342).

The spelling of 122221010121 in words is "one hundred twenty-two billion, two hundred twenty-one million, ten thousand, one hundred twenty-one".