2101002021111 has 16 divisors (see below), whose sum is σ = 3389852001024. Its totient is φ = 1129950666624.

The previous prime is 2101002021061. The next prime is 2101002021143. The reversal of 2101002021111 is 1111202001012.

It is not a de Polignac number, because 2101002021111 - 2⁶ = 2101002021047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101002071111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2942579505 + ... + 2942580218.

It is an arithmetic number, because the mean of its divisors is an integer number (211865750064).

Almost surely, 2^{2101002021111} is an apocalyptic number.

2101002021111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2101002021111 is a deficient number, since it is larger than the sum of its proper divisors (1288849979913).

2101002021111 is a wasteful number, since it uses less digits than its factorization.

2101002021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5885159750.

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

Adding to 2101002021111 its reverse (1111202001012), we get a palindrome (3212204022123).

The spelling of 2101002021111 in words is "two trillion, one hundred one billion, two million, twenty-one thousand, one hundred eleven".