2120220111 has 4 divisors (see below), whose sum is σ = 2826960152. Its totient is φ = 1413480072.

The previous prime is 2120220101. The next prime is 2120220119. The reversal of 2120220111 is 1110220212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2120220111 - 2⁵ = 2120220079 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 (2120220119) 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, 353370016 + ... + 353370021.

It is an arithmetic number, because the mean of its divisors is an integer number (706740038).

Almost surely, 2^2120220111 is an apocalyptic number.

2120220111 is a deficient number, since it is larger than the sum of its proper divisors (706740041).

2120220111 is an equidigital number, since it uses as much as digits as its factorization.

2120220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706740040.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2120220111 is about 46045.8479235642. The cubic root of 2120220111 is about 1284.6761155385.

Adding to 2120220111 its reverse (1110220212), we get a palindrome (3230440323).

The spelling of 2120220111 in words is "two billion, one hundred twenty million, two hundred twenty thousand, one hundred eleven".