2100210110111 has 4 divisors (see below), whose sum is σ = 2223751881312. Its totient is φ = 1976668338912.

The previous prime is 2100210110057. The next prime is 2100210110129. The reversal of 2100210110111 is 1110110120012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2100210110111 - 2²² = 2100205915807 is a prime.

It is a super-2 number, since 2×2100210110111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100210110092 and 2100210110101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100210110711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61770885575 + ... + 61770885608.

It is an arithmetic number, because the mean of its divisors is an integer number (555937970328).

Almost surely, 2^{2100210110111} is an apocalyptic number.

2100210110111 is a deficient number, since it is larger than the sum of its proper divisors (123541771201).

2100210110111 is a wasteful number, since it uses less digits than its factorization.

2100210110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123541771200.

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

Adding to 2100210110111 its reverse (1110110120012), we get a palindrome (3210320230123).

Subtracting from 2100210110111 its reverse (1110110120012), we obtain a palindrome (990099990099).

The spelling of 2100210110111 in words is "two trillion, one hundred billion, two hundred ten million, one hundred ten thousand, one hundred eleven".