2100210110121 has 4 divisors (see below), whose sum is σ = 2800280146832. Its totient is φ = 1400140073412.

The previous prime is 2100210110057. The next prime is 2100210110129. The reversal of 2100210110121 is 1210110120012.

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 not a de Polignac number, because 2100210110121 - 2⁶ = 2100210110057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100210110097 and 2100210110106.

It is not an unprimeable number, because it can be changed into a prime (2100210110129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350035018351 + ... + 350035018356.

It is an arithmetic number, because the mean of its divisors is an integer number (700070036708).

Almost surely, 2^{2100210110121} is an apocalyptic number.

It is an amenable number.

2100210110121 is a deficient number, since it is larger than the sum of its proper divisors (700070036711).

2100210110121 is an equidigital number, since it uses as much as digits as its factorization.

2100210110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700070036710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2100210110121 its reverse (1210110120012), we get a palindrome (3310320230133).

The spelling of 2100210110121 in words is "two trillion, one hundred billion, two hundred ten million, one hundred ten thousand, one hundred twenty-one".