9133125621 has 16 divisors (see below), whose sum is σ = 12647160000. Its totient is φ = 5857619328.

The previous prime is 9133125583. The next prime is 9133125629. The reversal of 9133125621 is 1265213319.

It is not a de Polignac number, because 9133125621 - 2²⁵ = 9099571189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9133125629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452371 + ... + 472128.

It is an arithmetic number, because the mean of its divisors is an integer number (790447500).

Almost surely, 2^9133125621 is an apocalyptic number.

It is an amenable number.

9133125621 is a deficient number, since it is larger than the sum of its proper divisors (3514034379).

9133125621 is a wasteful number, since it uses less digits than its factorization.

9133125621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924628.

The product of its digits is 9720, while the sum is 33.

The square root of 9133125621 is about 95567.3878527607. The cubic root of 9133125621 is about 2090.2896831437.

The spelling of 9133125621 in words is "nine billion, one hundred thirty-three million, one hundred twenty-five thousand, six hundred twenty-one".