212168356 has 9 divisors (see below), whose sum is σ = 371345611. Its totient is φ = 106069612.

The previous prime is 212168329. The next prime is 212168357. The reversal of 212168356 is 653861212.

The square root of 212168356 is 14566.

It is a perfect power (a square), and thus also a powerful number.

212168356 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212168356² = 90030822575485472, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212168357) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 25491 + ... + 32773.

Almost surely, 2^212168356 is an apocalyptic number.

212168356 is the 14566-th square number.

It is an amenable number.

212168356 is a deficient number, since it is larger than the sum of its proper divisors (159177255).

212168356 is an frugal number, since it uses more digits than its factorization.

212168356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14570 (or 7285 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The cubic root of 212168356 is about 596.4309939011.

The spelling of 212168356 in words is "two hundred twelve million, one hundred sixty-eight thousand, three hundred fifty-six".