2101210220111 has 12 divisors (see below), whose sum is σ = 2232137184120. Its totient is φ = 1977560234880.

The previous prime is 2101210220051. The next prime is 2101210220113. The reversal of 2101210220111 is 1110220121012.

It is not a de Polignac number, because 2101210220111 - 2³⁸ = 1826332313167 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 (2101210220113) 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 11 ways as a sum of consecutive naturals, for example, 17171816 + ... + 17293746.

It is an arithmetic number, because the mean of its divisors is an integer number (186011432010).

Almost surely, 2^{2101210220111} is an apocalyptic number.

2101210220111 is a deficient number, since it is larger than the sum of its proper divisors (130926964009).

2101210220111 is a wasteful number, since it uses less digits than its factorization.

2101210220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181594 (or 181577 counting only the distinct ones).

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

Adding to 2101210220111 its reverse (1110220121012), we get a palindrome (3211430341123).

Subtracting from 2101210220111 its reverse (1110220121012), we obtain a palindrome (990990099099).

The spelling of 2101210220111 in words is "two trillion, one hundred one billion, two hundred ten million, two hundred twenty thousand, one hundred eleven".