9933282227521 has 9 divisors (see below), whose sum is σ = 10181599004899. Its totient is φ = 9690880982800.

The previous prime is 9933282227501. The next prime is 9933282227549. The reversal of 9933282227521 is 1257222823399.

The square root of 9933282227521 is 3151711.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 478641201921 + 9454641025600 = 691839^2 + 3074840^2 .

It is not a de Polignac number, because 9933282227521 - 2⁵ = 9933282227489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9933282227501) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 129181716 + ... + 129258586.

Almost surely, 2^{9933282227521} is an apocalyptic number.

9933282227521 is the 3151711-st square number.

9933282227521 is the 1575856-th centered octagonal number.

It is an amenable number.

9933282227521 is a deficient number, since it is larger than the sum of its proper divisors (248316777378).

9933282227521 is an frugal number, since it uses more digits than its factorization.

9933282227521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153824 (or 76912 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 55.

The spelling of 9933282227521 in words is "nine trillion, nine hundred thirty-three billion, two hundred eighty-two million, two hundred twenty-seven thousand, five hundred twenty-one".