22633531521621 has 8 divisors (see below), whose sum is σ = 30199160328480. Its totient is φ = 15078461864592.

The previous prime is 22633531521589. The next prime is 22633531521709. The reversal of 22633531521621 is 12612513533622.

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

It is not a de Polignac number, because 22633531521621 - 2⁵ = 22633531521589 is a prime.

It is a super-2 number, since 2×22633531521621² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22633531531621) 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, 2639782455 + ... + 2639791028.

It is an arithmetic number, because the mean of its divisors is an integer number (3774895041060).

Almost surely, 2^{22633531521621} is an apocalyptic number.

It is an amenable number.

22633531521621 is a deficient number, since it is larger than the sum of its proper divisors (7565628806859).

22633531521621 is a wasteful number, since it uses less digits than its factorization.

22633531521621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5279574915.

The product of its digits is 388800, while the sum is 42.

The spelling of 22633531521621 in words is "twenty-two trillion, six hundred thirty-three billion, five hundred thirty-one million, five hundred twenty-one thousand, six hundred twenty-one".