33212133 has 32 divisors (see below), whose sum is σ = 52387200. Its totient is φ = 20736000.

The previous prime is 33212131. The next prime is 33212141. The reversal of 33212133 is 33121233.

It is not a de Polignac number, because 33212133 - 2¹ = 33212131 is a prime.

It is a super-2 number, since 2×33212133² = 2206091556819378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33212131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51493 + ... + 52133.

It is an arithmetic number, because the mean of its divisors is an integer number (1637100).

Almost surely, 2^33212133 is an apocalyptic number.

It is an amenable number.

33212133 is a deficient number, since it is larger than the sum of its proper divisors (19175067).

33212133 is a wasteful number, since it uses less digits than its factorization.

33212133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 764 counting only the distinct ones).

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

The square root of 33212133 is about 5762.9968766259. The cubic root of 33212133 is about 321.4392623746.

Adding to 33212133 its reverse (33121233), we get a palindrome (66333366).

The spelling of 33212133 in words is "thirty-three million, two hundred twelve thousand, one hundred thirty-three".