2143211145 has 16 divisors (see below), whose sum is σ = 3472546560. Its totient is φ = 1128576384.

The previous prime is 2143211113. The next prime is 2143211159. The reversal of 2143211145 is 5411123412.

It is not a de Polignac number, because 2143211145 - 2⁵ = 2143211113 is a prime.

It is a super-2 number, since 2×2143211145² = 9186708024104422050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 903124 + ... + 905493.

It is an arithmetic number, because the mean of its divisors is an integer number (217034160).

Almost surely, 2^2143211145 is an apocalyptic number.

It is an amenable number.

2143211145 is a deficient number, since it is larger than the sum of its proper divisors (1329335415).

2143211145 is a wasteful number, since it uses less digits than its factorization.

2143211145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808704.

The product of its digits is 960, while the sum is 24.

The square root of 2143211145 is about 46294.8284908801. The cubic root of 2143211145 is about 1289.3029796182.

Adding to 2143211145 its reverse (5411123412), we get a palindrome (7554334557).

The spelling of 2143211145 in words is "two billion, one hundred forty-three million, two hundred eleven thousand, one hundred forty-five".