22212101121200 has 120 divisors (see below), whose sum is σ = 56506778365968. Its totient is φ = 8361742090240.

The previous prime is 22212101121163. The next prime is 22212101121211. The reversal of 22212101121200 is 212110121222.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139204664 + ... + 139364136.

Almost surely, 2^{22212101121200} is an apocalyptic number.

22212101121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212101121200 is an abundant number, since it is smaller than the sum of its proper divisors (34294677244768).

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

22212101121200 is a wasteful number, since it uses less digits than its factorization.

22212101121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179991 (or 179980 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22212101121200 its reverse (212110121222), we get a palindrome (22424211242422).

The spelling of 22212101121200 in words is "twenty-two trillion, two hundred twelve billion, one hundred one million, one hundred twenty-one thousand, two hundred".