2100910202103 has 4 divisors (see below), whose sum is σ = 2801213602808. Its totient is φ = 1400606801400.

The previous prime is 2100910202089. The next prime is 2100910202119. The reversal of 2100910202103 is 3012020190012.

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

It is not a de Polignac number, because 2100910202103 - 2²⁸ = 2100641766647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100910202103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100910202143) 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, 350151700348 + ... + 350151700353.

It is an arithmetic number, because the mean of its divisors is an integer number (700303400702).

Almost surely, 2^{2100910202103} is an apocalyptic number.

2100910202103 is a deficient number, since it is larger than the sum of its proper divisors (700303400705).

2100910202103 is an equidigital number, since it uses as much as digits as its factorization.

2100910202103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700303400704.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 2100910202103 its reverse (3012020190012), we get a palindrome (5112930392115).

The spelling of 2100910202103 in words is "two trillion, one hundred billion, nine hundred ten million, two hundred two thousand, one hundred three".