122131302013 has 4 divisors (see below), whose sum is σ = 139578630880. Its totient is φ = 104683973148.

The previous prime is 122131301987. The next prime is 122131302019. The reversal of 122131302013 is 310203131221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122131302013 - 2²¹ = 122129204861 is a prime.

It is a super-4 number, since 4×122131302013⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122131302019) 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, 8723664423 + ... + 8723664436.

It is an arithmetic number, because the mean of its divisors is an integer number (34894657720).

Almost surely, 2^122131302013 is an apocalyptic number.

It is an amenable number.

122131302013 is a deficient number, since it is larger than the sum of its proper divisors (17447328867).

122131302013 is an equidigital number, since it uses as much as digits as its factorization.

122131302013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17447328866.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 122131302013 its reverse (310203131221), we get a palindrome (432334433234).

The spelling of 122131302013 in words is "one hundred twenty-two billion, one hundred thirty-one million, three hundred two thousand, thirteen".