22131232000220 has 48 divisors (see below), whose sum is σ = 53115740590080. Its totient is φ = 7587739001664.

The previous prime is 22131232000217. The next prime is 22131232000249. The reversal of 22131232000220 is 2200023213122.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 22131232000192 and 22131232000201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8648837 + ... + 10911683.

It is an arithmetic number, because the mean of its divisors is an integer number (1106577928960).

Almost surely, 2^{22131232000220} is an apocalyptic number.

22131232000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131232000220 is an abundant number, since it is smaller than the sum of its proper divisors (30984508589860).

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

22131232000220 is a wasteful number, since it uses less digits than its factorization.

22131232000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332722 (or 2332720 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22131232000220 its reverse (2200023213122), we get a palindrome (24331255213342).

The spelling of 22131232000220 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred thirty-two million, two hundred twenty", and thus it is an aban number.