22021121211200 has 42 divisors (see below), whose sum is σ = 54185721384246. Its totient is φ = 8808448483840.

The previous prime is 22021121211179. The next prime is 22021121211223. The reversal of 22021121211200 is 211212112022.

It can be written as a sum of positive squares in 3 ways, for example, as 408515279104 + 21612605932096 = 639152^2 + 4648936^2 .

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 6881598779 + ... + 6881601978.

Almost surely, 2^{22021121211200} is an apocalyptic number.

22021121211200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021121211200 is an abundant number, since it is smaller than the sum of its proper divisors (32164600173046).

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

22021121211200 is a wasteful number, since it uses less digits than its factorization.

22021121211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13763200779 (or 13763200764 counting only the distinct ones).

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

Adding to 22021121211200 its reverse (211212112022), we get a palindrome (22232333323222).

It can be divided in two parts, 2 and 2021121211200, that added together give a palindrome (2021121211202).

The spelling of 22021121211200 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, two hundred".