22120440412 has 12 divisors (see below), whose sum is σ = 44240880880. Its totient is φ = 9480188736.

The previous prime is 22120440359. The next prime is 22120440427. The reversal of 22120440412 is 21404402122.

22120440412 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395007837 + ... + 395007892.

Almost surely, 2^22120440412 is an apocalyptic number.

It is an amenable number.

22120440412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22120440412 is a wasteful number, since it uses less digits than its factorization.

22120440412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790015740 (or 790015738 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22120440412 its reverse (21404402122), we get a palindrome (43524842534).

The spelling of 22120440412 in words is "twenty-two billion, one hundred twenty million, four hundred forty thousand, four hundred twelve".