2121235504 has 20 divisors (see below), whose sum is σ = 4118080176. Its totient is φ = 1058505152.

The previous prime is 2121235489. The next prime is 2121235507. The reversal of 2121235504 is 4055321212.

It is not an unprimeable number, because it can be changed into a prime (2121235507) 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, 123739 + ... + 139834.

Almost surely, 2^2121235504 is an apocalyptic number.

It is an amenable number.

2121235504 is a deficient number, since it is larger than the sum of its proper divisors (1996844672).

2121235504 is a wasteful number, since it uses less digits than its factorization.

2121235504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264084 (or 264078 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2121235504 is about 46056.8724947754. The cubic root of 2121235504 is about 1284.8811638958.

Adding to 2121235504 its reverse (4055321212), we get a palindrome (6176556716).

The spelling of 2121235504 in words is "two billion, one hundred twenty-one million, two hundred thirty-five thousand, five hundred four".