1143200221 has 8 divisors (see below), whose sum is σ = 1163156864. Its totient is φ = 1123359840.

The previous prime is 1143200203. The next prime is 1143200239. The reversal of 1143200221 is 1220023411.

It is an interprime number because it is at equal distance from previous prime (1143200203) and next prime (1143200239).

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 1143200221 - 2²¹ = 1141103069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143200195 and 1143200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143200281) 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, 9111 + ... + 48676.

It is an arithmetic number, because the mean of its divisors is an integer number (145394608).

Almost surely, 2^1143200221 is an apocalyptic number.

It is an amenable number.

1143200221 is a deficient number, since it is larger than the sum of its proper divisors (19956643).

1143200221 is an equidigital number, since it uses as much as digits as its factorization.

1143200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58131.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1143200221 is about 33811.2440025504. The cubic root of 1143200221 is about 1045.6205256665.

Adding to 1143200221 its reverse (1220023411), we get a palindrome (2363223632).

The spelling of 1143200221 in words is "one billion, one hundred forty-three million, two hundred thousand, two hundred twenty-one".