122556612313 has 4 divisors (see below), whose sum is σ = 129765824820. Its totient is φ = 115347399808.

The previous prime is 122556612307. The next prime is 122556612391. The reversal of 122556612313 is 313216655221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313216655221 = 1997 ⋅156843593.

It can be written as a sum of positive squares in 2 ways, for example, as 110990255104 + 11566357209 = 333152^2 + 107547^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122556612313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122556612613) 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, 3604606228 + ... + 3604606261.

It is an arithmetic number, because the mean of its divisors is an integer number (32441456205).

Almost surely, 2^122556612313 is an apocalyptic number.

It is an amenable number.

122556612313 is a deficient number, since it is larger than the sum of its proper divisors (7209212507).

122556612313 is an equidigital number, since it uses as much as digits as its factorization.

122556612313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209212506.

The product of its digits is 64800, while the sum is 37.

The spelling of 122556612313 in words is "one hundred twenty-two billion, five hundred fifty-six million, six hundred twelve thousand, three hundred thirteen".