22040835921 has 12 divisors (see below), whose sum is σ = 34285744948. Its totient is φ = 13563591264.

The previous prime is 22040835911. The next prime is 22040835959. The reversal of 22040835921 is 12953804022.

It is a happy number.

22040835921 is a `hidden beast` number, since 2 + 20 + 40 + 8 + 3 + 592 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11526384321 + 10514451600 = 107361^2 + 102540^2 .

It is not a de Polignac number, because 22040835921 - 2⁹ = 22040835409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22040835911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94191490 + ... + 94191723.

Almost surely, 2^22040835921 is an apocalyptic number.

It is an amenable number.

22040835921 is a deficient number, since it is larger than the sum of its proper divisors (12244909027).

22040835921 is a wasteful number, since it uses less digits than its factorization.

22040835921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188383232 (or 188383229 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 22040835921 in words is "twenty-two billion, forty million, eight hundred thirty-five thousand, nine hundred twenty-one".