1143034221 has 24 divisors (see below), whose sum is σ = 1774159200. Its totient is φ = 652687392.

The previous prime is 1143034181. The next prime is 1143034231. The reversal of 1143034221 is 1224303411.

It is not a de Polignac number, because 1143034221 - 2²³ = 1134645613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143034231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 344830 + ... + 348128.

It is an arithmetic number, because the mean of its divisors is an integer number (73923300).

Almost surely, 2^1143034221 is an apocalyptic number.

It is an amenable number.

1143034221 is a deficient number, since it is larger than the sum of its proper divisors (631124979).

1143034221 is a wasteful number, since it uses less digits than its factorization.

1143034221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5673 (or 5666 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1143034221 is about 33808.7891087510. The cubic root of 1143034221 is about 1045.5699129490.

Adding to 1143034221 its reverse (1224303411), we get a palindrome (2367337632).

The spelling of 1143034221 in words is "one billion, one hundred forty-three million, thirty-four thousand, two hundred twenty-one".