211121120211100 has 72 divisors (see below), whose sum is σ = 504633515637888. Its totient is φ = 76025963812800.

The previous prime is 211121120211047. The next prime is 211121120211149. The reversal of 211121120211100 is 1112021121112.

211121120211100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 931577434 + ... + 931804033.

It is an arithmetic number, because the mean of its divisors is an integer number (7008798828304).

Almost surely, 2^{211121120211100} is an apocalyptic number.

211121120211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211121120211100 is an abundant number, since it is smaller than the sum of its proper divisors (293512395426788).

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

211121120211100 is a wasteful number, since it uses less digits than its factorization.

211121120211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863381595 (or 1863381588 counting only the distinct ones).

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

Adding to 211121120211100 its reverse (1112021121112), we get a palindrome (212233141332212).

The spelling of 211121120211100 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, one hundred".