211100020110 has 96 divisors (see below), whose sum is σ = 629961209280. Its totient is φ = 48044312064.

The previous prime is 211100020069. The next prime is 211100020111. The reversal of 211100020110 is 11020001112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 211100020092 and 211100020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100020111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 572265 + ... + 865844.

It is an arithmetic number, because the mean of its divisors is an integer number (6562095930).

Almost surely, 2^211100020110 is an apocalyptic number.

211100020110 is an abundant number, since it is smaller than the sum of its proper divisors (418861189170).

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

211100020110 is a wasteful number, since it uses less digits than its factorization.

211100020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438362 (or 1438359 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 211100020110 its reverse (11020001112), we get a palindrome (222120021222).

The spelling of 211100020110 in words is "two hundred eleven billion, one hundred million, twenty thousand, one hundred ten".