212222650172665 has 32 divisors (see below), whose sum is σ = 278094006594432. Its totient is φ = 154190891520000.

The previous prime is 212222650172593. The next prime is 212222650172759. The reversal of 212222650172665 is 566271056222212.

It is not a de Polignac number, because 212222650172665 - 2²¹ = 212222648075513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240919114 + ... + 241798396.

It is an arithmetic number, because the mean of its divisors is an integer number (8690437706076).

Almost surely, 2^{212222650172665} is an apocalyptic number.

It is an amenable number.

212222650172665 is a deficient number, since it is larger than the sum of its proper divisors (65871356421767).

212222650172665 is a wasteful number, since it uses less digits than its factorization.

212222650172665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883641.

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 212222650172665 in words is "two hundred twelve trillion, two hundred twenty-two billion, six hundred fifty million, one hundred seventy-two thousand, six hundred sixty-five".