122150521 has 4 divisors (see below), whose sum is σ = 125129844. Its totient is φ = 119171200.

The previous prime is 122150513. The next prime is 122150527. The reversal of 122150521 is 125051221.

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 1590121 + 120560400 = 1261^2 + 10980^2 .

It is a cyclic number.

It is not a de Polignac number, because 122150521 - 2³ = 122150513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122150527) 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, 1489600 + ... + 1489681.

It is an arithmetic number, because the mean of its divisors is an integer number (31282461).

Almost surely, 2^122150521 is an apocalyptic number.

It is an amenable number.

122150521 is a deficient number, since it is larger than the sum of its proper divisors (2979323).

122150521 is an equidigital number, since it uses as much as digits as its factorization.

122150521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979322.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 122150521 is about 11052.1726823281. The cubic root of 122150521 is about 496.1714539610.

The spelling of 122150521 in words is "one hundred twenty-two million, one hundred fifty thousand, five hundred twenty-one".