122564660213 has 4 divisors (see below), whose sum is σ = 122773459200. Its totient is φ = 122355861228.

The previous prime is 122564660209. The next prime is 122564660293. The reversal of 122564660213 is 312066465221.

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 122564660213 - 2² = 122564660209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122564660293) 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, 104398613 + ... + 104399786.

It is an arithmetic number, because the mean of its divisors is an integer number (30693364800).

Almost surely, 2^122564660213 is an apocalyptic number.

It is an amenable number.

122564660213 is a deficient number, since it is larger than the sum of its proper divisors (208798987).

122564660213 is an equidigital number, since it uses as much as digits as its factorization.

122564660213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208798986.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 122564660213 in words is "one hundred twenty-two billion, five hundred sixty-four million, six hundred sixty thousand, two hundred thirteen".