22521112120444 has 12 divisors (see below), whose sum is σ = 45042224240944. Its totient is φ = 9651905194464.

The previous prime is 22521112120387. The next prime is 22521112120453. The reversal of 22521112120444 is 44402121112522.

It is a happy number.

22521112120444 is an admirable number.

It is a super-3 number, since 3×22521112120444³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 402162716409 + ... + 402162716464.

Almost surely, 2^{22521112120444} is an apocalyptic number.

It is an amenable number.

22521112120444 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.

22521112120444 is a wasteful number, since it uses less digits than its factorization.

22521112120444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804325432884 (or 804325432882 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

Adding to 22521112120444 its reverse (44402121112522), we get a palindrome (66923233232966).

The spelling of 22521112120444 in words is "twenty-two trillion, five hundred twenty-one billion, one hundred twelve million, one hundred twenty thousand, four hundred forty-four".