122623158021 has 24 divisors (see below), whose sum is σ = 204821102304. Its totient is φ = 64680346080.

The previous prime is 122623158017. The next prime is 122623158029. The reversal of 122623158021 is 120851326221.

It is not a de Polignac number, because 122623158021 - 2² = 122623158017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122623158029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32081595 + ... + 32085416.

It is an arithmetic number, because the mean of its divisors is an integer number (8534212596).

Almost surely, 2^122623158021 is an apocalyptic number.

It is an amenable number.

122623158021 is a deficient number, since it is larger than the sum of its proper divisors (82197944283).

122623158021 is a wasteful number, since it uses less digits than its factorization.

122623158021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64167041 (or 64167034 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 122623158021 in words is "one hundred twenty-two billion, six hundred twenty-three million, one hundred fifty-eight thousand, twenty-one".