2120101211111 has 16 divisors (see below), whose sum is σ = 2417744985600. Its totient is φ = 1842913708128.

The previous prime is 2120101211093. The next prime is 2120101211159. The reversal of 2120101211111 is 1111121010212.

It is a cyclic number.

It is not a de Polignac number, because 2120101211111 - 2²⁶ = 2120034102247 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 (2120101211611) 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, 25657571 + ... + 25740068.

It is an arithmetic number, because the mean of its divisors is an integer number (151109061600).

Almost surely, 2^{2120101211111} is an apocalyptic number.

2120101211111 is a deficient number, since it is larger than the sum of its proper divisors (297643774489).

2120101211111 is a wasteful number, since it uses less digits than its factorization.

2120101211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51397838.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2120101211111 its reverse (1111121010212), we get a palindrome (3231222221323).

The spelling of 2120101211111 in words is "two trillion, one hundred twenty billion, one hundred one million, two hundred eleven thousand, one hundred eleven".