22131300020 has 24 divisors (see below), whose sum is σ = 47263456800. Its totient is φ = 8702476832.

The previous prime is 22131300013. The next prime is 22131300041. The reversal of 22131300020 is 2000313122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22131299968 and 22131300004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9376490 + ... + 9378849.

It is an arithmetic number, because the mean of its divisors is an integer number (1969310700).

Almost surely, 2^22131300020 is an apocalyptic number.

22131300020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131300020 is an abundant number, since it is smaller than the sum of its proper divisors (25132156780).

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

22131300020 is a wasteful number, since it uses less digits than its factorization.

22131300020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18755407 (or 18755405 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 22131300020 its reverse (2000313122), we get a palindrome (24131613142).

The spelling of 22131300020 in words is "twenty-two billion, one hundred thirty-one million, three hundred thousand, twenty".