220155013 has 4 divisors (see below), whose sum is σ = 237090028. Its totient is φ = 203220000.

The previous prime is 220155007. The next prime is 220155031. The reversal of 220155013 is 310551022.

220155013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24770529 + 195384484 = 4977^2 + 13978^2 .

It is a cyclic number.

It is not a de Polignac number, because 220155013 - 2²⁵ = 186600581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220155073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8467488 + ... + 8467513.

It is an arithmetic number, because the mean of its divisors is an integer number (59272507).

Almost surely, 2^220155013 is an apocalyptic number.

It is an amenable number.

220155013 is a deficient number, since it is larger than the sum of its proper divisors (16935015).

220155013 is a wasteful number, since it uses less digits than its factorization.

220155013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16935014.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 220155013 is about 14837.6215412040. The cubic root of 220155013 is about 603.8228258681.

It can be divided in two parts, 22015 and 5013, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 220155013 in words is "two hundred twenty million, one hundred fifty-five thousand, thirteen".