2120504105 has 16 divisors (see below), whose sum is σ = 2618987904. Its totient is φ = 1647528960.

The previous prime is 2120504033. The next prime is 2120504117. The reversal of 2120504105 is 5014050212.

It is not a de Polignac number, because 2120504105 - 2²⁸ = 1852068649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20792 + ... + 68361.

It is an arithmetic number, because the mean of its divisors is an integer number (163686744).

Almost surely, 2^2120504105 is an apocalyptic number.

It is an amenable number.

2120504105 is a deficient number, since it is larger than the sum of its proper divisors (498483799).

2120504105 is an equidigital number, since it uses as much as digits as its factorization.

2120504105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89296.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2120504105 is about 46048.9316379870. The cubic root of 2120504105 is about 1284.7334718508.

Adding to 2120504105 its reverse (5014050212), we get a palindrome (7134554317).

The spelling of 2120504105 in words is "two billion, one hundred twenty million, five hundred four thousand, one hundred five".