211100122021100 has 72 divisors (see below), whose sum is σ = 494931668627088. Its totient is φ = 77690768889600.

The previous prime is 211100122021099. The next prime is 211100122021123. The reversal of 211100122021100 is 1120221001112.

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, 264071111 + ... + 264869310.

It is an arithmetic number, because the mean of its divisors is an integer number (6874050953154).

Almost surely, 2^{211100122021100} is an apocalyptic number.

211100122021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211100122021100 is an abundant number, since it is smaller than the sum of its proper divisors (283831546605988).

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

211100122021100 is a wasteful number, since it uses less digits than its factorization.

211100122021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528940755 (or 528940748 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211100122021100 its reverse (1120221001112), we get a palindrome (212220343022212).

The spelling of 211100122021100 in words is "two hundred eleven trillion, one hundred billion, one hundred twenty-two million, twenty-one thousand, one hundred".