2102021102111 has 12 divisors (see below), whose sum is σ = 2502073530792. Its totient is φ = 1759831618608.

The previous prime is 2102021102099. The next prime is 2102021102117. The reversal of 2102021102111 is 1112011202012.

It is not a de Polignac number, because 2102021102111 - 2¹⁰ = 2102021101087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102021102117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 498816380 + ... + 498820593.

It is an arithmetic number, because the mean of its divisors is an integer number (208506127566).

Almost surely, 2^{2102021102111} is an apocalyptic number.

2102021102111 is a deficient number, since it is larger than the sum of its proper divisors (400052428681).

2102021102111 is an equidigital number, since it uses as much as digits as its factorization.

2102021102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997637030 (or 997637023 counting only the distinct ones).

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

Adding to 2102021102111 its reverse (1112011202012), we get a palindrome (3214032304123).

Subtracting from 2102021102111 its reverse (1112011202012), we obtain a palindrome (990009900099).

The spelling of 2102021102111 in words is "two trillion, one hundred two billion, twenty-one million, one hundred two thousand, one hundred eleven".