22431220401 has 16 divisors (see below), whose sum is σ = 31784479488. Its totient is φ = 14022547200.

The previous prime is 22431220397. The next prime is 22431220403. The reversal of 22431220401 is 10402213422.

It is not a de Polignac number, because 22431220401 - 2² = 22431220397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22431220403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797670 + ... + 825311.

It is an arithmetic number, because the mean of its divisors is an integer number (1986529968).

Almost surely, 2^22431220401 is an apocalyptic number.

It is an amenable number.

22431220401 is a deficient number, since it is larger than the sum of its proper divisors (9353259087).

22431220401 is a wasteful number, since it uses less digits than its factorization.

22431220401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623272.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22431220401 its reverse (10402213422), we get a palindrome (32833433823).

The spelling of 22431220401 in words is "twenty-two billion, four hundred thirty-one million, two hundred twenty thousand, four hundred one".