122131131 has 4 divisors (see below), whose sum is σ = 162841512. Its totient is φ = 81420752.

The previous prime is 122131129. The next prime is 122131157. The reversal of 122131131 is 131131221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122131131 - 2¹ = 122131129 is a prime.

It is a super-2 number, since 2×122131131² = 29832026318678322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122131131.

It is not an unprimeable number, because it can be changed into a prime (122131171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20355186 + ... + 20355191.

It is an arithmetic number, because the mean of its divisors is an integer number (40710378).

Almost surely, 2^122131131 is an apocalyptic number.

122131131 is a deficient number, since it is larger than the sum of its proper divisors (40710381).

122131131 is an equidigital number, since it uses as much as digits as its factorization.

122131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40710380.

The product of its digits is 36, while the sum is 15.

The square root of 122131131 is about 11051.2954444264. The cubic root of 122131131 is about 496.1451987214.

Adding to 122131131 its reverse (131131221), we get a palindrome (253262352).

The spelling of 122131131 in words is "one hundred twenty-two million, one hundred thirty-one thousand, one hundred thirty-one".