212170130 has 16 divisors (see below), whose sum is σ = 389112984. Its totient is φ = 83266560.

The previous prime is 212170129. The next prime is 212170151. The reversal of 212170130 is 31071212.

212170130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 181953121 + 30217009 = 13489^2 + 5497^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212170099 and 212170108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199631 + ... + 200690.

Almost surely, 2^212170130 is an apocalyptic number.

212170130 is a deficient number, since it is larger than the sum of its proper divisors (176942854).

212170130 is a wasteful number, since it uses less digits than its factorization.

212170130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400381.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 212170130 is about 14566.0608951082. The cubic root of 212170130 is about 596.4326562062.

The spelling of 212170130 in words is "two hundred twelve million, one hundred seventy thousand, one hundred thirty".