105151212 has 36 divisors (see below), whose sum is σ = 269170720. Its totient is φ = 34605792.

The previous prime is 105151181. The next prime is 105151229. The reversal of 105151212 is 212151501.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×105151212² = 22113554770137888, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15643 + ... + 21330.

Almost surely, 2^105151212 is an apocalyptic number.

105151212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

105151212 is an abundant number, since it is smaller than the sum of its proper divisors (164019508).

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

105151212 is a wasteful number, since it uses less digits than its factorization.

105151212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37062 (or 37057 counting only the distinct ones).

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

The square root of 105151212 is about 10254.3265015310. The cubic root of 105151212 is about 471.9957566888.

The spelling of 105151212 in words is "one hundred five million, one hundred fifty-one thousand, two hundred twelve".