2100211111103 has 6 divisors (see below), whose sum is σ = 2443102721136. Its totient is φ = 1800180952332.

The previous prime is 2100211111099. The next prime is 2100211111123. The reversal of 2100211111103 is 3011111120012.

It is not a de Polignac number, because 2100211111103 - 2² = 2100211111099 is a prime.

It is a super-2 number, since 2×2100211111103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100211111123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21430725575 + ... + 21430725672.

It is an arithmetic number, because the mean of its divisors is an integer number (407183786856).

Almost surely, 2^{2100211111103} is an apocalyptic number.

2100211111103 is a deficient number, since it is larger than the sum of its proper divisors (342891610033).

2100211111103 is an equidigital number, since it uses as much as digits as its factorization.

2100211111103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42861451261 (or 42861451254 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 2100211111103 its reverse (3011111120012), we get a palindrome (5111322231115).

The spelling of 2100211111103 in words is "two trillion, one hundred billion, two hundred eleven million, one hundred eleven thousand, one hundred three".