122522921 has 4 divisors (see below), whose sum is σ = 122549844. Its totient is φ = 122496000.

The previous prime is 122522899. The next prime is 122522969. The reversal of 122522921 is 129225221.

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 109098025 + 13424896 = 10445^2 + 3664^2 .

It is a cyclic number.

It is not a de Polignac number, because 122522921 - 2¹⁸ = 122260777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122522971) 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, 4760 + ... + 16361.

It is an arithmetic number, because the mean of its divisors is an integer number (30637461).

Almost surely, 2^122522921 is an apocalyptic number.

It is an amenable number.

122522921 is a deficient number, since it is larger than the sum of its proper divisors (26923).

122522921 is an equidigital number, since it uses as much as digits as its factorization.

122522921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26922.

The product of its digits is 1440, while the sum is 26.

The square root of 122522921 is about 11069.0072273895. The cubic root of 122522921 is about 496.6751679901.

The spelling of 122522921 in words is "one hundred twenty-two million, five hundred twenty-two thousand, nine hundred twenty-one".