22144440012 has 24 divisors (see below), whose sum is σ = 52203046896. Its totient is φ = 7305381888.

The previous prime is 22144439953. The next prime is 22144440029. The reversal of 22144440012 is 21004444122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9511053 + ... + 9513380.

It is an arithmetic number, because the mean of its divisors is an integer number (2175126954).

Almost surely, 2^22144440012 is an apocalyptic number.

It is an amenable number.

22144440012 is an abundant number, since it is smaller than the sum of its proper divisors (30058606884).

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

22144440012 is a wasteful number, since it uses less digits than its factorization.

22144440012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19024537 (or 19024535 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 22144440012 its reverse (21004444122), we get a palindrome (43148884134).

The spelling of 22144440012 in words is "twenty-two billion, one hundred forty-four million, four hundred forty thousand, twelve".