211121021120200 has 48 divisors (see below), whose sum is σ = 491071568665860. Its totient is φ = 84411385728000.

The previous prime is 211121021120197. The next prime is 211121021120201. The reversal of 211121021120200 is 2021120121112.

It can be written as a sum of positive squares in 6 ways, for example, as 128973590075716 + 82147431044484 = 11356654^2 + 9063522^2 .

It is not an unprimeable number, because it can be changed into a prime (211121021120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230934661 + ... + 231847060.

Almost surely, 2^{211121021120200} is an apocalyptic number.

211121021120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211121021120200 is an abundant number, since it is smaller than the sum of its proper divisors (279950547545660).

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

211121021120200 is a wasteful number, since it uses less digits than its factorization.

211121021120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462784018 (or 462784009 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211121021120200 its reverse (2021120121112), we get a palindrome (213142141241312).

The spelling of 211121021120200 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty-one million, one hundred twenty thousand, two hundred".