22552421000000 has 196 divisors, whose sum is σ = 59230484105724. Its totient is φ = 8490316800000.

The previous prime is 22552420999993. The next prime is 22552421000059. The reversal of 22552421000000 is 12425522.

It can be written as a sum of positive squares in 14 ways, for example, as 22550645557504 + 1775442496 = 4748752^2 + 42136^2 .

It is a super-2 number, since 2×22552421000000² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22552421000000.

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 27 ways as a sum of consecutive naturals, for example, 16336694 + ... + 17663306.

Almost surely, 2^{22552421000000} is an apocalyptic number.

22552421000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22552421000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29615242052862).

22552421000000 is an abundant number, since it is smaller than the sum of its proper divisors (36678063105724).

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

22552421000000 is an frugal number, since it uses more digits than its factorization.

22552421000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326672 (or 1326637 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 22552421000000 its reverse (12425522), we get a palindrome (22552433425522).

The spelling of 22552421000000 in words is "twenty-two trillion, five hundred fifty-two billion, four hundred twenty-one million", and thus it is an aban number.