20023222171665 has 8 divisors (see below), whose sum is σ = 32037155474688. Its totient is φ = 10679051824880.

The previous prime is 20023222171651. The next prime is 20023222171669. The reversal of 20023222171665 is 56617122232002.

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

It is not a de Polignac number, because 20023222171665 - 2⁴ = 20023222171649 is a prime.

It is a super-2 number, since 2×20023222171665² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20023222171669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667440739041 + ... + 667440739070.

It is an arithmetic number, because the mean of its divisors is an integer number (4004644434336).

Almost surely, 2^{20023222171665} is an apocalyptic number.

It is an amenable number.

20023222171665 is a deficient number, since it is larger than the sum of its proper divisors (12013933303023).

20023222171665 is a wasteful number, since it uses less digits than its factorization.

20023222171665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334881478119.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 20023222171665 in words is "twenty trillion, twenty-three billion, two hundred twenty-two million, one hundred seventy-one thousand, six hundred sixty-five".