22131230012220 has 96 divisors (see below), whose sum is σ = 70947082096128. Its totient is φ = 5049484998912.

The previous prime is 22131230012207. The next prime is 22131230012237. The reversal of 22131230012220 is 2221003213122.

It is a super-2 number, since 2×22131230012220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47067142 + ... + 47535021.

It is an arithmetic number, because the mean of its divisors is an integer number (739032105168).

Almost surely, 2^{22131230012220} is an apocalyptic number.

22131230012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131230012220 is an abundant number, since it is smaller than the sum of its proper divisors (48815852083908).

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

22131230012220 is a wasteful number, since it uses less digits than its factorization.

22131230012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94602739 (or 94602737 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 22131230012220 its reverse (2221003213122), we get a palindrome (24352233225342).

The spelling of 22131230012220 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred thirty million, twelve thousand, two hundred twenty".