33133213220 has 24 divisors (see below), whose sum is σ = 70418061504. Its totient is φ = 13093606496.

The previous prime is 33133213219. The next prime is 33133213237. The reversal of 33133213220 is 2231233133.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9978224 + ... + 9981543.

It is an arithmetic number, because the mean of its divisors is an integer number (2934085896).

Almost surely, 2^33133213220 is an apocalyptic number.

It is an amenable number.

33133213220 is an abundant number, since it is smaller than the sum of its proper divisors (37284848284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33133213220 is a wasteful number, since it uses less digits than its factorization.

33133213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19959859 (or 19959857 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 33133213220 its reverse (2231233133), we get a palindrome (35364446353).

The spelling of 33133213220 in words is "thirty-three billion, one hundred thirty-three million, two hundred thirteen thousand, two hundred twenty".