22212101021100 has 72 divisors (see below), whose sum is σ = 64272834223248. Its totient is φ = 5922690355200.

The previous prime is 22212101021081. The next prime is 22212101021137. The reversal of 22212101021100 is 112010121222.

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 22212101021100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31021 + ... + 6665220.

Almost surely, 2^{22212101021100} is an apocalyptic number.

22212101021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212101021100 is an abundant number, since it is smaller than the sum of its proper divisors (42060733202148).

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

22212101021100 is a wasteful number, since it uses less digits than its factorization.

22212101021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707315 (or 6707308 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22212101021100 its reverse (112010121222), we get a palindrome (22324111142322).

The spelling of 22212101021100 in words is "twenty-two trillion, two hundred twelve billion, one hundred one million, twenty-one thousand, one hundred".