2121143203 has 4 divisors (see below), whose sum is σ = 2126830288. Its totient is φ = 2115456120.

The previous prime is 2121143183. The next prime is 2121143207. The reversal of 2121143203 is 3023411212.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121143203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121143207) 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, 2842983 + ... + 2843728.

It is an arithmetic number, because the mean of its divisors is an integer number (531707572).

Almost surely, 2^2121143203 is an apocalyptic number.

2121143203 is a deficient number, since it is larger than the sum of its proper divisors (5687085).

2121143203 is an equidigital number, since it uses as much as digits as its factorization.

2121143203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5687084.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2121143203 is about 46055.8704510077. The cubic root of 2121143203 is about 1284.8625273455.

Adding to 2121143203 its reverse (3023411212), we get a palindrome (5144554415).

The spelling of 2121143203 in words is "two billion, one hundred twenty-one million, one hundred forty-three thousand, two hundred three".