2120055111 has 12 divisors (see below), whose sum is σ = 3067969320. Its totient is φ = 1410754320.

The previous prime is 2120055089. The next prime is 2120055149. The reversal of 2120055111 is 1115500212.

It is not a de Polignac number, because 2120055111 - 2¹⁴ = 2120038727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120055151) 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, 212841 + ... + 222578.

It is an arithmetic number, because the mean of its divisors is an integer number (255664110).

Almost surely, 2^2120055111 is an apocalyptic number.

2120055111 is a deficient number, since it is larger than the sum of its proper divisors (947914209).

2120055111 is a wasteful number, since it uses less digits than its factorization.

2120055111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435966 (or 435963 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 2120055111 is about 46044.0561962128. The cubic root of 2120055111 is about 1284.6427892725.

Adding to 2120055111 its reverse (1115500212), we get a palindrome (3235555323).

The spelling of 2120055111 in words is "two billion, one hundred twenty million, fifty-five thousand, one hundred eleven".