23021199999 has 32 divisors (see below), whose sum is σ = 39211146240. Its totient is φ = 13076181216.

The previous prime is 23021199989. The next prime is 23021200021. The reversal of 23021199999 is 99999112032.

It is not a de Polignac number, because 23021199999 - 2⁴ = 23021199983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021199959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 333124 + ... + 396249.

It is an arithmetic number, because the mean of its divisors is an integer number (1225348320).

Almost surely, 2^23021199999 is an apocalyptic number.

23021199999 is a deficient number, since it is larger than the sum of its proper divisors (16189946241).

23021199999 is a wasteful number, since it uses less digits than its factorization.

23021199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729556 (or 729550 counting only the distinct ones).

The product of its (nonzero) digits is 708588, while the sum is 54.

The spelling of 23021199999 in words is "twenty-three billion, twenty-one million, one hundred ninety-nine thousand, nine hundred ninety-nine".