2100111200103 has 24 divisors (see below), whose sum is σ = 3257399994240. Its totient is φ = 1200032351280.

The previous prime is 2100111200101. The next prime is 2100111200111. The reversal of 2100111200103 is 3010021110012.

It is not a de Polignac number, because 2100111200103 - 2¹ = 2100111200101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100111200101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6244008 + ... + 6571746.

It is an arithmetic number, because the mean of its divisors is an integer number (135724999760).

Almost surely, 2^{2100111200103} is an apocalyptic number.

2100111200103 is a deficient number, since it is larger than the sum of its proper divisors (1157288794137).

2100111200103 is a wasteful number, since it uses less digits than its factorization.

2100111200103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371347 (or 371340 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 2100111200103 its reverse (3010021110012), we get a palindrome (5110132310115).

Subtracting 2100111200103 from its reverse (3010021110012), we obtain a palindrome (909909909909).

The spelling of 2100111200103 in words is "two trillion, one hundred billion, one hundred eleven million, two hundred thousand, one hundred three".