2121440204 has 48 divisors (see below), whose sum is σ = 4117218336. Its totient is φ = 950208000.

The previous prime is 2121440179. The next prime is 2121440227. The reversal of 2121440204 is 4020441212.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 417479 + ... + 422529.

It is an arithmetic number, because the mean of its divisors is an integer number (85775382).

Almost surely, 2^2121440204 is an apocalyptic number.

It is an amenable number.

2121440204 is a deficient number, since it is larger than the sum of its proper divisors (1995778132).

2121440204 is a wasteful number, since it uses less digits than its factorization.

2121440204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306 (or 5304 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2121440204 is about 46059.0946936650. The cubic root of 2121440204 is about 1284.9224930667.

Adding to 2121440204 its reverse (4020441212), we get a palindrome (6141881416).

The spelling of 2121440204 in words is "two billion, one hundred twenty-one million, four hundred forty thousand, two hundred four".