122319513651 has 4 divisors (see below), whose sum is σ = 163092684872. Its totient is φ = 81546342432.

The previous prime is 122319513647. The next prime is 122319513671. The reversal of 122319513651 is 156315913221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 122319513651 - 2² = 122319513647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122319513671) 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, 20386585606 + ... + 20386585611.

It is an arithmetic number, because the mean of its divisors is an integer number (40773171218).

Almost surely, 2^122319513651 is an apocalyptic number.

122319513651 is a deficient number, since it is larger than the sum of its proper divisors (40773171221).

122319513651 is an equidigital number, since it uses as much as digits as its factorization.

122319513651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40773171220.

The product of its digits is 48600, while the sum is 39.

The spelling of 122319513651 in words is "one hundred twenty-two billion, three hundred nineteen million, five hundred thirteen thousand, six hundred fifty-one".