22131050520 has 256 divisors, whose sum is σ = 69701990400. Its totient is φ = 5616599040.

The previous prime is 22131050519. The next prime is 22131050533. The reversal of 22131050520 is 2505013122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37701667 + ... + 37702253.

It is an arithmetic number, because the mean of its divisors is an integer number (272273400).

Almost surely, 2^22131050520 is an apocalyptic number.

22131050520 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 22131050520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34850995200).

22131050520 is an abundant number, since it is smaller than the sum of its proper divisors (47570939880).

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

22131050520 is a wasteful number, since it uses less digits than its factorization.

22131050520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 22131050520 its reverse (2505013122), we get a palindrome (24636063642).

The spelling of 22131050520 in words is "twenty-two billion, one hundred thirty-one million, fifty thousand, five hundred twenty".