211121111012200 has 48 divisors (see below), whose sum is σ = 490864394052000. Its totient is φ = 84447100585920.

The previous prime is 211121111012191. The next prime is 211121111012233. The reversal of 211121111012200 is 2210111121112.

It is a super-2 number, since 2×211121111012200² (a number of 29 digits) contains 22 as substring.

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, 4248471 + ... + 20983129.

It is an arithmetic number, because the mean of its divisors is an integer number (10226341542750).

Almost surely, 2^{211121111012200} is an apocalyptic number.

211121111012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211121111012200 is an abundant number, since it is smaller than the sum of its proper divisors (279743283039800).

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

211121111012200 is a wasteful number, since it uses less digits than its factorization.

211121111012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16797754 (or 16797745 counting only the distinct ones).

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

Adding to 211121111012200 its reverse (2210111121112), we get a palindrome (213331222133312).

The spelling of 211121111012200 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred eleven million, twelve thousand, two hundred".