122002022121 has 64 divisors (see below), whose sum is σ = 198596014080. Its totient is φ = 65068323840.

The previous prime is 122002022117. The next prime is 122002022141. The reversal of 122002022121 is 121220200221.

It is not a de Polignac number, because 122002022121 - 2² = 122002022117 is a prime.

It is a super-2 number, since 2×122002022121² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122002022121.

It is not an unprimeable number, because it can be changed into a prime (122002022141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34746756 + ... + 34750266.

It is an arithmetic number, because the mean of its divisors is an integer number (3103062720).

Almost surely, 2^122002022121 is an apocalyptic number.

It is an amenable number.

122002022121 is a deficient number, since it is larger than the sum of its proper divisors (76593991959).

122002022121 is a wasteful number, since it uses less digits than its factorization.

122002022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 122002022121 its reverse (121220200221), we get a palindrome (243222222342).

The spelling of 122002022121 in words is "one hundred twenty-two billion, two million, twenty-two thousand, one hundred twenty-one".