122112021121 has 16 divisors (see below), whose sum is σ = 126662538240. Its totient is φ = 117584550720.

The previous prime is 122112021089. The next prime is 122112021127. The reversal of 122112021121 is 121120211221.

It is not a de Polignac number, because 122112021121 - 2⁵ = 122112021089 is a prime.

It is a super-2 number, since 2×122112021121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122112021095 and 122112021104.

It is not an unprimeable number, because it can be changed into a prime (122112021127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24582180 + ... + 24587146.

It is an arithmetic number, because the mean of its divisors is an integer number (7916408640).

Almost surely, 2^122112021121 is an apocalyptic number.

It is an amenable number.

122112021121 is a deficient number, since it is larger than the sum of its proper divisors (4550517119).

122112021121 is a wasteful number, since it uses less digits than its factorization.

122112021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7104.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122112021121 its reverse (121120211221), we get a palindrome (243232232342).

It can be divided in two parts, 1 and 22112021121, that added together give a palindrome (22112021122).

The spelling of 122112021121 in words is "one hundred twenty-two billion, one hundred twelve million, twenty-one thousand, one hundred twenty-one".