33220100031312 has 80 divisors (see below), whose sum is σ = 87564854544192. Its totient is φ = 10849455144960.

The previous prime is 33220100031299. The next prime is 33220100031337. The reversal of 33220100031312 is 21313000102233.

It is a super-2 number, since 2×33220100031312² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 21320778 + ... + 22825769.

Almost surely, 2^{33220100031312} is an apocalyptic number.

It is an amenable number.

33220100031312 is an abundant number, since it is smaller than the sum of its proper divisors (54344754512880).

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

33220100031312 is a wasteful number, since it uses less digits than its factorization.

33220100031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44146876 (or 44146870 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 33220100031312 its reverse (21313000102233), we get a palindrome (54533100133545).

The spelling of 33220100031312 in words is "thirty-three trillion, two hundred twenty billion, one hundred million, thirty-one thousand, three hundred twelve".