212112165 has 8 divisors (see below), whose sum is σ = 339379488. Its totient is φ = 113126480.

The previous prime is 212112161. The next prime is 212112167. The reversal of 212112165 is 561211212.

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

It is not a de Polignac number, because 212112165 - 2² = 212112161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112161) 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, 7070391 + ... + 7070420.

It is an arithmetic number, because the mean of its divisors is an integer number (42422436).

Almost surely, 2^212112165 is an apocalyptic number.

It is an amenable number.

212112165 is a deficient number, since it is larger than the sum of its proper divisors (127267323).

212112165 is a wasteful number, since it uses less digits than its factorization.

212112165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14140819.

The product of its digits is 240, while the sum is 21.

The square root of 212112165 is about 14564.0710311369. The cubic root of 212112165 is about 596.3783360123.

Adding to 212112165 its reverse (561211212), we get a palindrome (773323377).

The spelling of 212112165 in words is "two hundred twelve million, one hundred twelve thousand, one hundred sixty-five".