22721353063165 has 8 divisors (see below), whose sum is σ = 28700656500960. Its totient is φ = 17220393900432.

The previous prime is 22721353063151. The next prime is 22721353063207. The reversal of 22721353063165 is 56136035312722.

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 22721353063165 - 2³⁵ = 22686993324797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119586068659 + ... + 119586068848.

It is an arithmetic number, because the mean of its divisors is an integer number (3587582062620).

Almost surely, 2^{22721353063165} is an apocalyptic number.

It is an amenable number.

22721353063165 is a deficient number, since it is larger than the sum of its proper divisors (5979303437795).

22721353063165 is a wasteful number, since it uses less digits than its factorization.

22721353063165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239172137531.

The product of its (nonzero) digits is 1360800, while the sum is 46.

Adding to 22721353063165 its reverse (56136035312722), we get a palindrome (78857388375887).

The spelling of 22721353063165 in words is "twenty-two trillion, seven hundred twenty-one billion, three hundred fifty-three million, sixty-three thousand, one hundred sixty-five".