212163407 has 8 divisors (see below), whose sum is σ = 216069120. Its totient is φ = 208283320.

The previous prime is 212163401. The next prime is 212163409. The reversal of 212163407 is 704361212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212163407 - 2²⁰ = 211114831 is a prime.

It is a super-2 number, since 2×212163407² = 90026622539695298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212163401) 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, 10718 + ... + 23220.

It is an arithmetic number, because the mean of its divisors is an integer number (27008640).

Almost surely, 2^212163407 is an apocalyptic number.

212163407 is a deficient number, since it is larger than the sum of its proper divisors (3905713).

212163407 is a wasteful number, since it uses less digits than its factorization.

212163407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12813.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 212163407 is about 14565.8301170925. The cubic root of 212163407 is about 596.4263564518.

The spelling of 212163407 in words is "two hundred twelve million, one hundred sixty-three thousand, four hundred seven".