23221492996 has 27 divisors (see below), whose sum is σ = 44011551423. Its totient is φ = 10715783520.

The previous prime is 23221492991. The next prime is 23221492997. The reversal of 23221492996 is 69929412232.

The square root of 23221492996 is 152386.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4195152900 + 19026340096 = 64770^2 + 137936^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23221492991) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3959106 + ... + 3964966.

Almost surely, 2^23221492996 is an apocalyptic number.

23221492996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

23221492996 is the 152386-th square number.

It is an amenable number.

23221492996 is a deficient number, since it is larger than the sum of its proper divisors (20790058427).

23221492996 is an frugal number, since it uses more digits than its factorization.

23221492996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11752 (or 5876 counting only the distinct ones).

The product of its digits is 839808, while the sum is 49.

Multiplying 23221492996 by its sum of digits (49), we get a square (1137853156804 = 1066702²).

The spelling of 23221492996 in words is "twenty-three billion, two hundred twenty-one million, four hundred ninety-two thousand, nine hundred ninety-six".