22145212344 has 16 divisors (see below), whose sum is σ = 55363030920. Its totient is φ = 7381737440.

The previous prime is 22145212273. The next prime is 22145212373. The reversal of 22145212344 is 44321254122.

It is a happy number.

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, 461358567 + ... + 461358614.

Almost surely, 2^22145212344 is an apocalyptic number.

22145212344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22145212344 is an abundant number, since it is smaller than the sum of its proper divisors (33217818576).

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

22145212344 is a wasteful number, since it uses less digits than its factorization.

22145212344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922717190 (or 922717186 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

Adding to 22145212344 its reverse (44321254122), we get a palindrome (66466466466).

The spelling of 22145212344 in words is "twenty-two billion, one hundred forty-five million, two hundred twelve thousand, three hundred forty-four".