2120204011 has 4 divisors (see below), whose sum is σ = 2244921912. Its totient is φ = 1995486112.

The previous prime is 2120204003. The next prime is 2120204033. The reversal of 2120204011 is 1104020212.

It is a happy number.

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

It is not a de Polignac number, because 2120204011 - 2³ = 2120204003 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 2120203982 and 2120204000.

It is not an unprimeable number, because it can be changed into a prime (2120204071) 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, 62358925 + ... + 62358958.

It is an arithmetic number, because the mean of its divisors is an integer number (561230478).

Almost surely, 2^2120204011 is an apocalyptic number.

2120204011 is a deficient number, since it is larger than the sum of its proper divisors (124717901).

2120204011 is a wasteful number, since it uses less digits than its factorization.

2120204011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124717900.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2120204011 is about 46045.6730974801. The cubic root of 2120204011 is about 1284.6728637790.

Adding to 2120204011 its reverse (1104020212), we get a palindrome (3224224223).

The spelling of 2120204011 in words is "two billion, one hundred twenty million, two hundred four thousand, eleven".