22021111200 has 144 divisors (see below), whose sum is σ = 78195057696. Its totient is φ = 5338444800.

The previous prime is 22021111183. The next prime is 22021111213. The reversal of 22021111200 is 211112022.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 390667 + ... + 443466.

It is an arithmetic number, because the mean of its divisors is an integer number (543021234).

Almost surely, 2^22021111200 is an apocalyptic number.

22021111200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021111200 is an abundant number, since it is smaller than the sum of its proper divisors (56173946496).

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

22021111200 is a wasteful number, since it uses less digits than its factorization.

22021111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834167 (or 834154 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22021111200 its reverse (211112022), we get a palindrome (22232223222).

It can be divided in two parts, 2 and 2021111200, that added together give a palindrome (2021111202).

The spelling of 22021111200 in words is "twenty-two billion, twenty-one million, one hundred eleven thousand, two hundred".