33011213020 has 48 divisors (see below), whose sum is σ = 73442049408. Its totient is φ = 12420869120.

The previous prime is 33011212987. The next prime is 33011213021. The reversal of 33011213020 is 2031211033.

It is a junction number, because it is equal to n+sod(n) for n = 33011212985 and 33011213003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33011213021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610194 + ... + 662086.

It is an arithmetic number, because the mean of its divisors is an integer number (1530042696).

Almost surely, 2^33011213020 is an apocalyptic number.

It is an amenable number.

33011213020 is an abundant number, since it is smaller than the sum of its proper divisors (40430836388).

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

33011213020 is a wasteful number, since it uses less digits than its factorization.

33011213020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53790 (or 53788 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 33011213020 its reverse (2031211033), we get a palindrome (35042424053).

The spelling of 33011213020 in words is "thirty-three billion, eleven million, two hundred thirteen thousand, twenty".