22122121300 has 18 divisors (see below), whose sum is σ = 48005003438. Its totient is φ = 8848848480.

The previous prime is 22122121297. The next prime is 22122121321. The reversal of 22122121300 is 312122122.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5428447684 + 16693673616 = 73678^2 + 129204^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110610507 + ... + 110610706.

Almost surely, 2^22122121300 is an apocalyptic number.

22122121300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122121300 is an abundant number, since it is smaller than the sum of its proper divisors (25882882138).

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

22122121300 is a wasteful number, since it uses less digits than its factorization.

22122121300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221221227 (or 221221220 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22122121300 its reverse (312122122), we get a palindrome (22434243422).

The spelling of 22122121300 in words is "twenty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, three hundred".