211100110021100 has 18 divisors (see below), whose sum is σ = 458087238746004. Its totient is φ = 84440044008400.

The previous prime is 211100110021091. The next prime is 211100110021103. The reversal of 211100110021100 is 1120011001112.

It is not an unprimeable number, because it can be changed into a prime (211100110021103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1055500550006 + ... + 1055500550205.

Almost surely, 2^{211100110021100} is an apocalyptic number.

211100110021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211100110021100 is an abundant number, since it is smaller than the sum of its proper divisors (246987128724904).

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

211100110021100 is a wasteful number, since it uses less digits than its factorization.

211100110021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111001100225 (or 2111001100218 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 211100110021100 its reverse (1120011001112), we get a palindrome (212220121022212).

The spelling of 211100110021100 in words is "two hundred eleven trillion, one hundred billion, one hundred ten million, twenty-one thousand, one hundred".