22220100021200 has 60 divisors (see below), whose sum is σ = 53384433966240. Its totient is φ = 8887932842880.

The previous prime is 22220100021199. The next prime is 22220100021239. The reversal of 22220100021200 is 212000102222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38505197 + ... + 39078003.

It is an arithmetic number, because the mean of its divisors is an integer number (889740566104).

Almost surely, 2^{22220100021200} is an apocalyptic number.

22220100021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220100021200 is an abundant number, since it is smaller than the sum of its proper divisors (31164333945040).

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

22220100021200 is a wasteful number, since it uses less digits than its factorization.

22220100021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669804 (or 669793 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22220100021200 its reverse (212000102222), we get a palindrome (22432100123422).

The spelling of 22220100021200 in words is "twenty-two trillion, two hundred twenty billion, one hundred million, twenty-one thousand, two hundred".