22131224120 has 16 divisors (see below), whose sum is σ = 49795254360. Its totient is φ = 8852489632.

The previous prime is 22131224117. The next prime is 22131224147. The reversal of 22131224120 is 2142213122.

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 = 22131224092 and 22131224101.

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 3 ways as a sum of consecutive naturals, for example, 276640262 + ... + 276640341.

Almost surely, 2^22131224120 is an apocalyptic number.

22131224120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131224120 is an abundant number, since it is smaller than the sum of its proper divisors (27664030240).

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

22131224120 is a wasteful number, since it uses less digits than its factorization.

22131224120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553280614 (or 553280610 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 22131224120 its reverse (2142213122), we get a palindrome (24273437242).

The spelling of 22131224120 in words is "twenty-two billion, one hundred thirty-one million, two hundred twenty-four thousand, one hundred twenty".