122312021131 has 4 divisors (see below), whose sum is σ = 122312828272. Its totient is φ = 122311213992.

The previous prime is 122312021123. The next prime is 122312021179. The reversal of 122312021131 is 131120213221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 122312021131 - 2³ = 122312021123 is a prime.

It is a super-2 number, since 2×122312021131² (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 = 122312021099 and 122312021108.

It is not an unprimeable number, because it can be changed into a prime (122312021191) 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, 100296 + ... + 504661.

It is an arithmetic number, because the mean of its divisors is an integer number (30578207068).

Almost surely, 2^122312021131 is an apocalyptic number.

122312021131 is a deficient number, since it is larger than the sum of its proper divisors (807141).

122312021131 is an equidigital number, since it uses as much as digits as its factorization.

122312021131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807140.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 122312021131 its reverse (131120213221), we get a palindrome (253432234352).

The spelling of 122312021131 in words is "one hundred twenty-two billion, three hundred twelve million, twenty-one thousand, one hundred thirty-one".