23221432443 has 16 divisors (see below), whose sum is σ = 33798096000. Its totient is φ = 14064650880.

The previous prime is 23221432439. The next prime is 23221432453. The reversal of 23221432443 is 34423412232.

It is not a de Polignac number, because 23221432443 - 2² = 23221432439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23221432443.

It is not an unprimeable number, because it can be changed into a prime (23221432453) 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, 170718 + ... + 274931.

It is an arithmetic number, because the mean of its divisors is an integer number (2112381000).

Almost surely, 2^23221432443 is an apocalyptic number.

23221432443 is a deficient number, since it is larger than the sum of its proper divisors (10576663557).

23221432443 is a wasteful number, since it uses less digits than its factorization.

23221432443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447242.

The product of its digits is 27648, while the sum is 30.

Adding to 23221432443 its reverse (34423412232), we get a palindrome (57644844675).

The spelling of 23221432443 in words is "twenty-three billion, two hundred twenty-one million, four hundred thirty-two thousand, four hundred forty-three".