22144013012 has 36 divisors (see below), whose sum is σ = 43178763348. Its totient is φ = 9927561600.

The previous prime is 22144012999. The next prime is 22144013029. The reversal of 22144013012 is 21031044122.

It can be written as a sum of positive squares in 2 ways, for example, as 12951805636 + 9192207376 = 113806^2 + 95876^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278039 + ... + 348702.

It is an arithmetic number, because the mean of its divisors is an integer number (1199410093).

Almost surely, 2^22144013012 is an apocalyptic number.

22144013012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22144013012 is a deficient number, since it is larger than the sum of its proper divisors (21034750336).

22144013012 is a wasteful number, since it uses less digits than its factorization.

22144013012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626840 (or 626827 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 22144013012 its reverse (21031044122), we get a palindrome (43175057134).

The spelling of 22144013012 in words is "twenty-two billion, one hundred forty-four million, thirteen thousand, twelve".