2120211113 has 4 divisors (see below), whose sum is σ = 2120761860. Its totient is φ = 2119660368.

The previous prime is 2120211109. The next prime is 2120211157. The reversal of 2120211113 is 3111120212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 701031529 + 1419179584 = 26477^2 + 37672^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120211113 - 2² = 2120211109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2120214113) 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, 269558 + ... + 277311.

It is an arithmetic number, because the mean of its divisors is an integer number (530190465).

Almost surely, 2^2120211113 is an apocalyptic number.

It is an amenable number.

2120211113 is a deficient number, since it is larger than the sum of its proper divisors (550747).

2120211113 is an equidigital number, since it uses as much as digits as its factorization.

2120211113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550746.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2120211113 is about 46045.7502164966. The cubic root of 2120211113 is about 1284.6742981907.

Adding to 2120211113 its reverse (3111120212), we get a palindrome (5231331325).

Subtracting 2120211113 from its reverse (3111120212), we obtain a palindrome (990909099).

The spelling of 2120211113 in words is "two billion, one hundred twenty million, two hundred eleven thousand, one hundred thirteen".