22420312144 has 20 divisors (see below), whose sum is σ = 44449573696. Its totient is φ = 10949454432.

The previous prime is 22420312139. The next prime is 22420312207. The reversal of 22420312144 is 44121302422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16293144 + ... + 16294519.

Almost surely, 2^22420312144 is an apocalyptic number.

It is an amenable number.

22420312144 is a deficient number, since it is larger than the sum of its proper divisors (22029261552).

22420312144 is a wasteful number, since it uses less digits than its factorization.

22420312144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32587714 (or 32587708 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 22420312144 its reverse (44121302422), we get a palindrome (66541614566).

The spelling of 22420312144 in words is "twenty-two billion, four hundred twenty million, three hundred twelve thousand, one hundred forty-four".