22753533535721 has 4 divisors (see below), whose sum is σ = 22872661983744. Its totient is φ = 22634405087700.

The previous prime is 22753533535709. The next prime is 22753533535801. The reversal of 22753533535721 is 12753533535722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22753533535721 - 2¹⁸ = 22753533273577 is a prime.

It is a super-2 number, since 2×22753533535721² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22753533535121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59564223725 + ... + 59564224106.

It is an arithmetic number, because the mean of its divisors is an integer number (5718165495936).

Almost surely, 2^{22753533535721} is an apocalyptic number.

It is an amenable number.

22753533535721 is a deficient number, since it is larger than the sum of its proper divisors (119128448023).

22753533535721 is a wasteful number, since it uses less digits than its factorization.

22753533535721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119128448022.

The product of its digits is 19845000, while the sum is 53.

Subtracting from 22753533535721 its reverse (12753533535722), we obtain a palindrome (9999999999999).

The spelling of 22753533535721 in words is "twenty-two trillion, seven hundred fifty-three billion, five hundred thirty-three million, five hundred thirty-five thousand, seven hundred twenty-one".