122345013523021 has 4 divisors (see below), whose sum is σ = 123427712757852. Its totient is φ = 121262314288192.

The previous prime is 122345013522997. The next prime is 122345013523037. The reversal of 122345013523021 is 120325310543221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23038905612996 + 99306107910025 = 4799886^2 + 9965245^2 .

It is a cyclic number.

It is not a de Polignac number, because 122345013523021 - 2⁴⁵ = 87160641434189 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 (122345013523091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541349617246 + ... + 541349617471.

It is an arithmetic number, because the mean of its divisors is an integer number (30856928189463).

Almost surely, 2^{122345013523021} is an apocalyptic number.

It is an amenable number.

122345013523021 is a deficient number, since it is larger than the sum of its proper divisors (1082699234831).

122345013523021 is a wasteful number, since it uses less digits than its factorization.

122345013523021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082699234830.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 122345013523021 in words is "one hundred twenty-two trillion, three hundred forty-five billion, thirteen million, five hundred twenty-three thousand, twenty-one".