210111100101 has 12 divisors (see below), whose sum is σ = 346850070112. Its totient is φ = 120063485736.

The previous prime is 210111100027. The next prime is 210111100153. The reversal of 210111100101 is 101001111012.

It is not a de Polignac number, because 210111100101 - 2³⁵ = 175751361733 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111100181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1667548351 + ... + 1667548476.

Almost surely, 2^210111100101 is an apocalyptic number.

210111100101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210111100101 is a deficient number, since it is larger than the sum of its proper divisors (136738970011).

210111100101 is a wasteful number, since it uses less digits than its factorization.

210111100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335096840 (or 3335096837 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 210111100101 its reverse (101001111012), we get a palindrome (311112211113).

The spelling of 210111100101 in words is "two hundred ten billion, one hundred eleven million, one hundred thousand, one hundred one".