2100212310113 has 4 divisors (see below), whose sum is σ = 2100215297988. Its totient is φ = 2100209322240.

The previous prime is 2100212310071. The next prime is 2100212310151. The reversal of 2100212310113 is 3110132120012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 981381478609 + 1118830831504 = 990647^2 + 1057748^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100212310113 - 2²⁸ = 2099943874657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100212310091 and 2100212310100.

It is not an unprimeable number, because it can be changed into a prime (2100212316113) 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, 202745 + ... + 2059497.

It is an arithmetic number, because the mean of its divisors is an integer number (525053824497).

Almost surely, 2^{2100212310113} is an apocalyptic number.

It is an amenable number.

2100212310113 is a deficient number, since it is larger than the sum of its proper divisors (2987875).

2100212310113 is a wasteful number, since it uses less digits than its factorization.

2100212310113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987874.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2100212310113 its reverse (3110132120012), we get a palindrome (5210344430125).

The spelling of 2100212310113 in words is "two trillion, one hundred billion, two hundred twelve million, three hundred ten thousand, one hundred thirteen".