22054520621 has 8 divisors (see below), whose sum is σ = 25560169344. Its totient is φ = 18637622640.

The previous prime is 22054520591. The next prime is 22054520627. The reversal of 22054520621 is 12602545022.

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

It is a de Polignac number, because none of the positive numbers 2^k-22054520621 is a prime.

It is a super-2 number, since 2×22054520621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22054520627) 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, 22187150 + ... + 22188143.

It is an arithmetic number, because the mean of its divisors is an integer number (3195021168).

Almost surely, 2^22054520621 is an apocalyptic number.

It is an amenable number.

22054520621 is a deficient number, since it is larger than the sum of its proper divisors (3505648723).

22054520621 is an equidigital number, since it uses as much as digits as its factorization.

22054520621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44375371.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 22054520621 in words is "twenty-two billion, fifty-four million, five hundred twenty thousand, six hundred twenty-one".