33481512220 has 24 divisors (see below), whose sum is σ = 75719728224. Its totient is φ = 12362404416.

The previous prime is 33481512191. The next prime is 33481512227. The reversal of 33481512220 is 2221518433.

It is a super-2 number, since 2×33481512220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33481512227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64387264 + ... + 64387783.

It is an arithmetic number, because the mean of its divisors is an integer number (3154988676).

Almost surely, 2^33481512220 is an apocalyptic number.

It is an amenable number.

33481512220 is an abundant number, since it is smaller than the sum of its proper divisors (42238216004).

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

33481512220 is a wasteful number, since it uses less digits than its factorization.

33481512220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128775069 (or 128775067 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 33481512220 in words is "thirty-three billion, four hundred eighty-one million, five hundred twelve thousand, two hundred twenty".