212161210 has 32 divisors (see below), whose sum is σ = 395891712. Its totient is φ = 81776640.

The previous prime is 212161199. The next prime is 212161211. The reversal of 212161210 is 12161212.

212161210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (212161211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78339 + ... + 81001.

It is an arithmetic number, because the mean of its divisors is an integer number (12371616).

Almost surely, 2^212161210 is an apocalyptic number.

212161210 is a deficient number, since it is larger than the sum of its proper divisors (183730502).

212161210 is a wasteful number, since it uses less digits than its factorization.

212161210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2958.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 212161210 is about 14565.7547006669. The cubic root of 212161210 is about 596.4242977348.

The spelling of 212161210 in words is "two hundred twelve million, one hundred sixty-one thousand, two hundred ten".