33212973 has 8 divisors (see below), whose sum is σ = 45226368. Its totient is φ = 21670784.

The previous prime is 33212887. The next prime is 33212981. The reversal of 33212973 is 37921233.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33212973 - 2¹⁰ = 33211949 is a prime.

It is a super-2 number, since 2×33212973² = 2206203150997458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33212973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33212983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117636 + ... + 117917.

It is an arithmetic number, because the mean of its divisors is an integer number (5653296).

Almost surely, 2^33212973 is an apocalyptic number.

It is an amenable number.

33212973 is a deficient number, since it is larger than the sum of its proper divisors (12013395).

33212973 is a wasteful number, since it uses less digits than its factorization.

33212973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235603.

The product of its digits is 6804, while the sum is 30.

The square root of 33212973 is about 5763.0697549136. The cubic root of 33212973 is about 321.4419722949.

The spelling of 33212973 in words is "thirty-three million, two hundred twelve thousand, nine hundred seventy-three".