23221213044424 has 32 divisors (see below), whose sum is σ = 45807172097400. Its totient is φ = 11021274478080.

The previous prime is 23221213044391. The next prime is 23221213044427. The reversal of 23221213044424 is 42444031212232.

It can be written as a sum of positive squares in 4 ways, for example, as 21441363552324 + 1779849492100 = 4630482^2 + 1334110^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23221213044424.

It is not an unprimeable number, because it can be changed into a prime (23221213044427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956695719 + ... + 956719990.

Almost surely, 2^{23221213044424} is an apocalyptic number.

It is an amenable number.

23221213044424 is a deficient number, since it is larger than the sum of its proper divisors (22585959052976).

23221213044424 is a wasteful number, since it uses less digits than its factorization.

23221213044424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913415793 (or 1913415789 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 23221213044424 its reverse (42444031212232), we get a palindrome (65665244256656).

The spelling of 23221213044424 in words is "twenty-three trillion, two hundred twenty-one billion, two hundred thirteen million, forty-four thousand, four hundred twenty-four".