215100112 has 20 divisors (see below), whose sum is σ = 417048580. Its totient is φ = 107474688.

The previous prime is 215100107. The next prime is 215100143. The reversal of 215100112 is 211001512.

It can be written as a sum of positive squares in 2 ways, for example, as 101123136 + 113976976 = 10056^2 + 10676^2 .

It is a junction number, because it is equal to n+sod(n) for n = 215100092 and 215100101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24214 + ... + 31882.

It is an arithmetic number, because the mean of its divisors is an integer number (20852429).

Almost surely, 2^215100112 is an apocalyptic number.

It is an amenable number.

215100112 is a deficient number, since it is larger than the sum of its proper divisors (201948468).

215100112 is a wasteful number, since it uses less digits than its factorization.

215100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9430 (or 9424 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 215100112 is about 14666.2916921763. The cubic root of 215100112 is about 599.1656105654.

Adding to 215100112 its reverse (211001512), we get a palindrome (426101624).

The spelling of 215100112 in words is "two hundred fifteen million, one hundred thousand, one hundred twelve".