220115155 has 8 divisors (see below), whose sum is σ = 284456592. Its totient is φ = 162546528.

The previous prime is 220115141. The next prime is 220115177. The reversal of 220115155 is 551511022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220115155 - 2¹¹ = 220113107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693129 + ... + 1693258.

It is an arithmetic number, because the mean of its divisors is an integer number (35557074).

Almost surely, 2^220115155 is an apocalyptic number.

220115155 is a deficient number, since it is larger than the sum of its proper divisors (64341437).

220115155 is a wasteful number, since it uses less digits than its factorization.

220115155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386405.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 220115155 is about 14836.2783406082. The cubic root of 220115155 is about 603.7863839350.

Adding to 220115155 its reverse (551511022), we get a palindrome (771626177).

The spelling of 220115155 in words is "two hundred twenty million, one hundred fifteen thousand, one hundred fifty-five".