21131300022 has 64 divisors (see below), whose sum is σ = 50908538880. Its totient is φ = 5719319424.

The previous prime is 21131300017. The next prime is 21131300081. The reversal of 21131300022 is 22000313112.

It is a junction number, because it is equal to n+sod(n) for n = 21131299974 and 21131300010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99118 + ... + 228225.

It is an arithmetic number, because the mean of its divisors is an integer number (795445920).

Almost surely, 2^21131300022 is an apocalyptic number.

21131300022 is an abundant number, since it is smaller than the sum of its proper divisors (29777238858).

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

21131300022 is a wasteful number, since it uses less digits than its factorization.

21131300022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327437.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21131300022 its reverse (22000313112), we get a palindrome (43131613134).

The spelling of 21131300022 in words is "twenty-one billion, one hundred thirty-one million, three hundred thousand, twenty-two".