211222121122200 has 96 divisors (see below), whose sum is σ = 662145750651600. Its totient is φ = 55693023682560.

The previous prime is 211222121122193. The next prime is 211222121122211. The reversal of 211222121122200 is 2221121222112.

It is a super-2 number, since 2×211222121122200² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 1977681817 + ... + 1977788616.

Almost surely, 2^{211222121122200} is an apocalyptic number.

211222121122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222121122200 is an abundant number, since it is smaller than the sum of its proper divisors (450923629529400).

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

211222121122200 is a wasteful number, since it uses less digits than its factorization.

211222121122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955470541 (or 3955470532 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211222121122200 its reverse (2221121222112), we get a palindrome (213443242344312).

The spelling of 211222121122200 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred".