33199125921 has 48 divisors (see below), whose sum is σ = 52057933200. Its totient is φ = 20266799616.

The previous prime is 33199125893. The next prime is 33199125929. The reversal of 33199125921 is 12952199133.

33199125921 is a `hidden beast` number, since 33 + 19 + 9 + 12 + 592 + 1 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 13855879521 + 19343246400 = 117711^2 + 139080^2 .

It is not a de Polignac number, because 33199125921 - 2⁵ = 33199125889 is a prime.

It is a super-2 number, since 2×33199125921² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33199125929) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7848235 + ... + 7852463.

It is an arithmetic number, because the mean of its divisors is an integer number (1084540275).

Almost surely, 2^33199125921 is an apocalyptic number.

It is an amenable number.

33199125921 is a deficient number, since it is larger than the sum of its proper divisors (18858807279).

33199125921 is a wasteful number, since it uses less digits than its factorization.

33199125921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770 (or 4767 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The spelling of 33199125921 in words is "thirty-three billion, one hundred ninety-nine million, one hundred twenty-five thousand, nine hundred twenty-one".