2120304111 has 4 divisors (see below), whose sum is σ = 2827072152. Its totient is φ = 1413536072.

The previous prime is 2120304101. The next prime is 2120304113. The reversal of 2120304111 is 1114030212.

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 2120304111 - 2¹⁵ = 2120271343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120304113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353384016 + ... + 353384021.

It is an arithmetic number, because the mean of its divisors is an integer number (706768038).

Almost surely, 2^2120304111 is an apocalyptic number.

2120304111 is a deficient number, since it is larger than the sum of its proper divisors (706768041).

2120304111 is an equidigital number, since it uses as much as digits as its factorization.

2120304111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706768040.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2120304111 is about 46046.7600488894. The cubic root of 2120304111 is about 1284.6930809733.

Adding to 2120304111 its reverse (1114030212), we get a palindrome (3234334323).

The spelling of 2120304111 in words is "two billion, one hundred twenty million, three hundred four thousand, one hundred eleven".