220115115 has 24 divisors (see below), whose sum is σ = 416218608. Its totient is φ = 106722240.

The previous prime is 220115113. The next prime is 220115131. The reversal of 220115115 is 511511022.

It is not a de Polignac number, because 220115115 - 2¹ = 220115113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220115111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221844 + ... + 222833.

It is an arithmetic number, because the mean of its divisors is an integer number (17342442).

Almost surely, 2^220115115 is an apocalyptic number.

220115115 is a deficient number, since it is larger than the sum of its proper divisors (196103493).

220115115 is a wasteful number, since it uses less digits than its factorization.

220115115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444699 (or 444696 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 220115115 is about 14836.2769925612. The cubic root of 220115115 is about 603.7863473610.

Adding to 220115115 its reverse (511511022), we get a palindrome (731626137).

The spelling of 220115115 in words is "two hundred twenty million, one hundred fifteen thousand, one hundred fifteen".