2100110110121 has 4 divisors (see below), whose sum is σ = 2210642221200. Its totient is φ = 1989577999044.

The previous prime is 2100110110099. The next prime is 2100110110123. The reversal of 2100110110121 is 1210110110012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100110110121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100110110123) 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, 55266055511 + ... + 55266055548.

It is an arithmetic number, because the mean of its divisors is an integer number (552660555300).

Almost surely, 2^{2100110110121} is an apocalyptic number.

It is an amenable number.

2100110110121 is a deficient number, since it is larger than the sum of its proper divisors (110532111079).

2100110110121 is a wasteful number, since it uses less digits than its factorization.

2100110110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110532111078.

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

Adding to 2100110110121 its reverse (1210110110012), we get a palindrome (3310220220133).

The spelling of 2100110110121 in words is "two trillion, one hundred billion, one hundred ten million, one hundred ten thousand, one hundred twenty-one".