33213020013 has 12 divisors (see below), whose sum is σ = 47991587488. Its totient is φ = 22134063240.

The previous prime is 33213019999. The next prime is 33213020107. The reversal of 33213020013 is 31002031233.

33213020013 is a `hidden beast` number, since 332 + 130 + 200 + 1 + 3 = 666.

It is not a de Polignac number, because 33213020013 - 2⁴ = 33213019997 is a prime.

It is a super-2 number, since 2×33213020013² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33213020413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 635995 + ... + 686232.

Almost surely, 2^33213020013 is an apocalyptic number.

It is an amenable number.

33213020013 is a deficient number, since it is larger than the sum of its proper divisors (14778567475).

33213020013 is a wasteful number, since it uses less digits than its factorization.

33213020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325024 (or 1325021 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 33213020013 its reverse (31002031233), we get a palindrome (64215051246).

The spelling of 33213020013 in words is "thirty-three billion, two hundred thirteen million, twenty thousand, thirteen".