33212979 has 12 divisors (see below), whose sum is σ = 48087000. Its totient is φ = 22089984.

The previous prime is 33212887. The next prime is 33212981. The reversal of 33212979 is 97921233.

It is not a de Polignac number, because 33212979 - 2⁸ = 33212723 is a prime.

It is a super-2 number, since 2×33212979² = 2206203948108882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33212999) 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, 69 + ... + 8150.

It is an arithmetic number, because the mean of its divisors is an integer number (4007250).

Almost surely, 2^33212979 is an apocalyptic number.

33212979 is a deficient number, since it is larger than the sum of its proper divisors (14874021).

33212979 is a wasteful number, since it uses less digits than its factorization.

33212979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8674 (or 8671 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 33212979 is about 5763.0702754695. The cubic root of 33212979 is about 321.4419916513.

It can be divided in two parts, 33212 and 979, that added together give a triangular number (34191 = T₂₆₁).

The spelling of 33212979 in words is "thirty-three million, two hundred twelve thousand, nine hundred seventy-nine".