22051641621 has 16 divisors (see below), whose sum is σ = 30799949184. Its totient is φ = 14007189504.

The previous prime is 22051641589. The next prime is 22051641643. The reversal of 22051641621 is 12614615022.

It is not a de Polignac number, because 22051641621 - 2⁵ = 22051641589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22051641671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604036 + ... + 639501.

It is an arithmetic number, because the mean of its divisors is an integer number (1924996824).

Almost surely, 2^22051641621 is an apocalyptic number.

It is an amenable number.

22051641621 is a deficient number, since it is larger than the sum of its proper divisors (8748307563).

22051641621 is a wasteful number, since it uses less digits than its factorization.

22051641621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243820.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 22051641621 in words is "twenty-two billion, fifty-one million, six hundred forty-one thousand, six hundred twenty-one".