22149946621 has 16 divisors (see below), whose sum is σ = 24271151040. Its totient is φ = 20046785920.

The previous prime is 22149946603. The next prime is 22149946631. The reversal of 22149946621 is 12664994122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22149946621 - 2¹¹ = 22149944573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22149946631) 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, 7789626 + ... + 7792468.

It is an arithmetic number, because the mean of its divisors is an integer number (1516946940).

Almost surely, 2^22149946621 is an apocalyptic number.

It is an amenable number.

22149946621 is a deficient number, since it is larger than the sum of its proper divisors (2121204419).

22149946621 is a wasteful number, since it uses less digits than its factorization.

22149946621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5756.

The product of its digits is 373248, while the sum is 46.

The spelling of 22149946621 in words is "twenty-two billion, one hundred forty-nine million, nine hundred forty-six thousand, six hundred twenty-one".