122531121 has 24 divisors (see below), whose sum is σ = 188631144. Its totient is φ = 76377600.

The previous prime is 122531117. The next prime is 122531131. The reversal of 122531121 is 121135221.

122531121 is a `hidden beast` number, since 12 + 2 + 531 + 121 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 318096 + 122213025 = 564^2 + 11055^2 .

It is not a de Polignac number, because 122531121 - 2² = 122531117 is a prime.

It is a super-2 number, since 2×122531121² = 30027751227033282, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122531094 and 122531103.

It is not an unprimeable number, because it can be changed into a prime (122531111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21471 + ... + 26571.

It is an arithmetic number, because the mean of its divisors is an integer number (7859631).

Almost surely, 2^122531121 is an apocalyptic number.

It is an amenable number.

122531121 is a deficient number, since it is larger than the sum of its proper divisors (66100023).

122531121 is a wasteful number, since it uses less digits than its factorization.

122531121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5281 (or 5278 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 122531121 is about 11069.3776247809. The cubic root of 122531121 is about 496.6862479455.

Adding to 122531121 its reverse (121135221), we get a palindrome (243666342).

The spelling of 122531121 in words is "one hundred twenty-two million, five hundred thirty-one thousand, one hundred twenty-one".