2143045121 has 16 divisors (see below), whose sum is σ = 2463753600. Its totient is φ = 1826012160.

The previous prime is 2143045067. The next prime is 2143045147. The reversal of 2143045121 is 1215403412.

It is not a de Polignac number, because 2143045121 - 2⁶ = 2143045057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2143047121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 963791 + ... + 966011.

It is an arithmetic number, because the mean of its divisors is an integer number (153984600).

Almost surely, 2^2143045121 is an apocalyptic number.

It is an amenable number.

2143045121 is a deficient number, since it is larger than the sum of its proper divisors (320708479).

2143045121 is a wasteful number, since it uses less digits than its factorization.

2143045121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2143045121 is about 46293.0353401027. The cubic root of 2143045121 is about 1289.2696867769.

Adding to 2143045121 its reverse (1215403412), we get a palindrome (3358448533).

The spelling of 2143045121 in words is "two billion, one hundred forty-three million, forty-five thousand, one hundred twenty-one".