22021131300 has 144 divisors (see below), whose sum is σ = 72983995392. Its totient is φ = 5021827200.

The previous prime is 22021131289. The next prime is 22021131311. The reversal of 22021131300 is 313112022.

It is an interprime number because it is at equal distance from previous prime (22021131289) and next prime (22021131311).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22021131300.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 918465 + ... + 942135.

Almost surely, 2^22021131300 is an apocalyptic number.

22021131300 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 22021131300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36491997696).

22021131300 is an abundant number, since it is smaller than the sum of its proper divisors (50962864092).

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

22021131300 is a wasteful number, since it uses less digits than its factorization.

22021131300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24138 (or 24131 counting only the distinct ones).

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

Adding to 22021131300 its reverse (313112022), we get a palindrome (22334243322).

The spelling of 22021131300 in words is "twenty-two billion, twenty-one million, one hundred thirty-one thousand, three hundred".