22244435631 has 72 divisors (see below), whose sum is σ = 36685368720. Its totient is φ = 12967637760.

The previous prime is 22244435627. The next prime is 22244435657. The reversal of 22244435631 is 13653444222.

It is not a de Polignac number, because 22244435631 - 2² = 22244435627 is a prime.

It is a super-2 number, since 2×22244435631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22244435531) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3582976 + ... + 3589178.

It is an arithmetic number, because the mean of its divisors is an integer number (509519010).

Almost surely, 2^22244435631 is an apocalyptic number.

22244435631 is a deficient number, since it is larger than the sum of its proper divisors (14440933089).

22244435631 is a wasteful number, since it uses less digits than its factorization.

22244435631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6357 (or 6343 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 22244435631 its reverse (13653444222), we get a palindrome (35897879853).

The spelling of 22244435631 in words is "twenty-two billion, two hundred forty-four million, four hundred thirty-five thousand, six hundred thirty-one".