2102110021211 has 4 divisors (see below), whose sum is σ = 2104664226192. Its totient is φ = 2099555816232.

The previous prime is 2102110021177. The next prime is 2102110021213. The reversal of 2102110021211 is 1121200112012.

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 2102110021211 - 2¹⁸ = 2102109759067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102110021213) 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, 1277101256 + ... + 1277102901.

It is an arithmetic number, because the mean of its divisors is an integer number (526166056548).

Almost surely, 2^{2102110021211} is an apocalyptic number.

2102110021211 is a deficient number, since it is larger than the sum of its proper divisors (2554204981).

2102110021211 is an equidigital number, since it uses as much as digits as its factorization.

2102110021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554204980.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2102110021211 its reverse (1121200112012), we get a palindrome (3223310133223).

The spelling of 2102110021211 in words is "two trillion, one hundred two billion, one hundred ten million, twenty-one thousand, two hundred eleven".