1143201221 has 8 divisors (see below), whose sum is σ = 1153271520. Its totient is φ = 1133172208.

The previous prime is 1143201187. The next prime is 1143201233. The reversal of 1143201221 is 1221023411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143201221 - 2¹⁰ = 1143200197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143201251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46670 + ... + 66816.

It is an arithmetic number, because the mean of its divisors is an integer number (144158940).

Almost surely, 2^1143201221 is an apocalyptic number.

It is an amenable number.

1143201221 is a deficient number, since it is larger than the sum of its proper divisors (10070299).

1143201221 is a wasteful number, since it uses less digits than its factorization.

1143201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20643.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1143201221 is about 33811.2587905272. The cubic root of 1143201221 is about 1045.6208305475.

Adding to 1143201221 its reverse (1221023411), we get a palindrome (2364224632).

The spelling of 1143201221 in words is "one billion, one hundred forty-three million, two hundred one thousand, two hundred twenty-one".