100161215 has 32 divisors (see below), whose sum is σ = 155036160. Its totient is φ = 60278400.

The previous prime is 100161209. The next prime is 100161221. The reversal of 100161215 is 512161001.

It is an interprime number because it is at equal distance from previous prime (100161209) and next prime (100161221).

It is not a de Polignac number, because 100161215 - 2⁴ = 100161199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100161193 and 100161202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6680 + ... + 15650.

It is an arithmetic number, because the mean of its divisors is an integer number (4844880).

Almost surely, 2^100161215 is an apocalyptic number.

100161215 is a deficient number, since it is larger than the sum of its proper divisors (54874945).

100161215 is a wasteful number, since it uses less digits than its factorization.

100161215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9023.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 100161215 is about 10008.0575038316. The cubic root of 100161215 is about 464.4081806889.

The spelling of 100161215 in words is "one hundred million, one hundred sixty-one thousand, two hundred fifteen".