22131230033220 has 576 divisors, whose sum is σ = 79448112285696. Its totient is φ = 4564816542720.

The previous prime is 22131230033149. The next prime is 22131230033239. The reversal of 22131230033220 is 2233003213122.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1519681659 + ... + 1519696221.

It is an arithmetic number, because the mean of its divisors is an integer number (137930750496).

Almost surely, 2^{22131230033220} is an apocalyptic number.

22131230033220 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 22131230033220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39724056142848).

22131230033220 is an abundant number, since it is smaller than the sum of its proper divisors (57316882252476).

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

22131230033220 is a wasteful number, since it uses less digits than its factorization.

22131230033220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14758 (or 14728 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 22131230033220 its reverse (2233003213122), we get a palindrome (24364233246342).

The spelling of 22131230033220 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred thirty million, thirty-three thousand, two hundred twenty".