22013144400 has 120 divisors (see below), whose sum is σ = 75939757600. Its totient is φ = 5418616320.

The previous prime is 22013144371. The next prime is 22013144449. The reversal of 22013144400 is 444131022.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 689950 + ... + 721149.

Almost surely, 2^22013144400 is an apocalyptic number.

22013144400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22013144400 is an abundant number, since it is smaller than the sum of its proper divisors (53926613200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22013144400 is a wasteful number, since it uses less digits than its factorization.

22013144400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411133 (or 1411122 counting only the distinct ones).

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

Adding to 22013144400 its reverse (444131022), we get a palindrome (22457275422).

The spelling of 22013144400 in words is "twenty-two billion, thirteen million, one hundred forty-four thousand, four hundred".