2121143204 has 12 divisors (see below), whose sum is σ = 3907369200. Its totient is φ = 1004752008.

The previous prime is 2121143183. The next prime is 2121143207. The reversal of 2121143204 is 4023411212.

It is not an unprimeable number, because it can be changed into a prime (2121143207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13954814 + ... + 13954965.

It is an arithmetic number, because the mean of its divisors is an integer number (325614100).

Almost surely, 2^2121143204 is an apocalyptic number.

It is an amenable number.

2121143204 is a deficient number, since it is larger than the sum of its proper divisors (1786225996).

2121143204 is a wasteful number, since it uses less digits than its factorization.

2121143204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27909802 (or 27909800 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2121143204 is about 46055.8704618640. The cubic root of 2121143204 is about 1284.8625275474.

Adding to 2121143204 its reverse (4023411212), we get a palindrome (6144554416).

The spelling of 2121143204 in words is "two billion, one hundred twenty-one million, one hundred forty-three thousand, two hundred four".