2110201021111 has 4 divisors (see below), whose sum is σ = 2178272021824. Its totient is φ = 2042130020400.

The previous prime is 2110201021081. The next prime is 2110201021129. The reversal of 2110201021111 is 1111201020112.

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 2110201021111 - 2¹¹ = 2110201019063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110201021091 and 2110201021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110201024111) 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, 34035500310 + ... + 34035500371.

It is an arithmetic number, because the mean of its divisors is an integer number (544568005456).

Almost surely, 2^{2110201021111} is an apocalyptic number.

2110201021111 is a deficient number, since it is larger than the sum of its proper divisors (68071000713).

2110201021111 is an equidigital number, since it uses as much as digits as its factorization.

2110201021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68071000712.

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

Adding to 2110201021111 its reverse (1111201020112), we get a palindrome (3221402041223).

Subtracting from 2110201021111 its reverse (1111201020112), we obtain a palindrome (999000000999).

The spelling of 2110201021111 in words is "two trillion, one hundred ten billion, two hundred one million, twenty-one thousand, one hundred eleven".