100165212 has 54 divisors (see below), whose sum is σ = 294538608. Its totient is φ = 28618128.

The previous prime is 100165211. The next prime is 100165213. The reversal of 100165212 is 212561001.

100165212 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 652 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (100165211) and next prime (100165213).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100165211) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26628 + ... + 30155.

Almost surely, 2^100165212 is an apocalyptic number.

100165212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100165212 is an abundant number, since it is smaller than the sum of its proper divisors (194373396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100165212 is a wasteful number, since it uses less digits than its factorization.

100165212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56807 (or 56795 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 100165212 is about 10008.2571909399. The cubic root of 100165212 is about 464.4143581127.

The spelling of 100165212 in words is "one hundred million, one hundred sixty-five thousand, two hundred twelve".