22421252000000 has 252 divisors, whose sum is σ = 63934862873280. Its totient is φ = 7687276800000.

The previous prime is 22421251999999. The next prime is 22421252000023. The reversal of 22421252000000 is 25212422.

It is a super-3 number, since 3×22421252000000³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 27599621 + ... + 28400379.

Almost surely, 2^{22421252000000} is an apocalyptic number.

22421252000000 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 22421252000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31967431436640).

22421252000000 is an abundant number, since it is smaller than the sum of its proper divisors (41513610873280).

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

22421252000000 is an frugal number, since it uses more digits than its factorization.

22421252000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800812 (or 800773 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 22421252000000 its reverse (25212422), we get a palindrome (22421277212422).

The spelling of 22421252000000 in words is "twenty-two trillion, four hundred twenty-one billion, two hundred fifty-two million", and thus it is an aban number.