22121333112 has 32 divisors (see below), whose sum is σ = 56082257280. Its totient is φ = 7269921120.

The previous prime is 22121333111. The next prime is 22121333123. The reversal of 22121333112 is 21133312122.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121333111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6489298 + ... + 6492705.

It is an arithmetic number, because the mean of its divisors is an integer number (1752570540).

Almost surely, 2^22121333112 is an apocalyptic number.

It is an amenable number.

22121333112 is an abundant number, since it is smaller than the sum of its proper divisors (33960924168).

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

22121333112 is a wasteful number, since it uses less digits than its factorization.

22121333112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12982083 (or 12982079 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 22121333112 its reverse (21133312122), we get a palindrome (43254645234).

The spelling of 22121333112 in words is "twenty-two billion, one hundred twenty-one million, three hundred thirty-three thousand, one hundred twelve".