122111122211 has 12 divisors (see below), whose sum is σ = 139186147320. Its totient is φ = 106785432000.

The previous prime is 122111122181. The next prime is 122111122219. The reversal of 122111122211 is 112221111221.

It is not a de Polignac number, because 122111122211 - 2²² = 122106927907 is a prime.

It is a super-2 number, since 2×122111122211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122111122211.

It is not an unprimeable number, because it can be changed into a prime (122111122219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19011290 + ... + 19017711.

It is an arithmetic number, because the mean of its divisors is an integer number (11598845610).

Almost surely, 2^122111122211 is an apocalyptic number.

122111122211 is a deficient number, since it is larger than the sum of its proper divisors (17075025109).

122111122211 is a wasteful number, since it uses less digits than its factorization.

122111122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38029046 (or 38029033 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 122111122211 its reverse (112221111221), we get a palindrome (234332233432).

The spelling of 122111122211 in words is "one hundred twenty-two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred eleven".