33012212420 has 48 divisors (see below), whose sum is σ = 75656101248. Its totient is φ = 11999976960.

The previous prime is 33012212411. The next prime is 33012212447. The reversal of 33012212420 is 2421221033.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 33012212392 and 33012212401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 596777 + ... + 649743.

It is an arithmetic number, because the mean of its divisors is an integer number (1576168776).

Almost surely, 2^33012212420 is an apocalyptic number.

It is an amenable number.

33012212420 is an abundant number, since it is smaller than the sum of its proper divisors (42643888828).

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

33012212420 is a wasteful number, since it uses less digits than its factorization.

33012212420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55820 (or 55818 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 33012212420 its reverse (2421221033), we get a palindrome (35433433453).

The spelling of 33012212420 in words is "thirty-three billion, twelve million, two hundred twelve thousand, four hundred twenty".