122731451213 has 16 divisors (see below), whose sum is σ = 144809723904. Its totient is φ = 101819255040.

The previous prime is 122731451209. The next prime is 122731451237. The reversal of 122731451213 is 312154137221.

It is a cyclic number.

It is not a de Polignac number, because 122731451213 - 2² = 122731451209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122731451213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122731451243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191020 + ... + 1289957.

It is an arithmetic number, because the mean of its divisors is an integer number (9050607744).

Almost surely, 2^122731451213 is an apocalyptic number.

It is an amenable number.

122731451213 is a deficient number, since it is larger than the sum of its proper divisors (22078272691).

122731451213 is a wasteful number, since it uses less digits than its factorization.

122731451213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481212.

The product of its digits is 10080, while the sum is 32.

Adding to 122731451213 its reverse (312154137221), we get a palindrome (434885588434).

The spelling of 122731451213 in words is "one hundred twenty-two billion, seven hundred thirty-one million, four hundred fifty-one thousand, two hundred thirteen".