2100121110211 has 4 divisors (see below), whose sum is σ = 2106070462152. Its totient is φ = 2094171758272.

The previous prime is 2100121110203. The next prime is 2100121110221. The reversal of 2100121110211 is 1120111210012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2100121110211 - 2³ = 2100121110203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100121110191 and 2100121110200.

It is not an unprimeable number, because it can be changed into a prime (2100121110221) 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, 2974675441 + ... + 2974676146.

It is an arithmetic number, because the mean of its divisors is an integer number (526517615538).

Almost surely, 2^{2100121110211} is an apocalyptic number.

2100121110211 is a deficient number, since it is larger than the sum of its proper divisors (5949351941).

2100121110211 is an equidigital number, since it uses as much as digits as its factorization.

2100121110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5949351940.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2100121110211 its reverse (1120111210012), we get a palindrome (3220232320223).

The spelling of 2100121110211 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred ten thousand, two hundred eleven".