212261172 has 24 divisors (see below), whose sum is σ = 495516000. Its totient is φ = 70719456.

The previous prime is 212261171. The next prime is 212261177. The reversal of 212261172 is 271162212.

212261172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212261171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39079 + ... + 44177.

It is an arithmetic number, because the mean of its divisors is an integer number (20646500).

Almost surely, 2^212261172 is an apocalyptic number.

It is an amenable number.

212261172 is an abundant number, since it is smaller than the sum of its proper divisors (283254828).

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

212261172 is a wasteful number, since it uses less digits than its factorization.

212261172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8575 (or 8573 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 212261172 is about 14569.1857013355. The cubic root of 212261172 is about 596.5179535679.

The spelling of 212261172 in words is "two hundred twelve million, two hundred sixty-one thousand, one hundred seventy-two".