143339221 has 8 divisors (see below), whose sum is σ = 147704480. Its totient is φ = 138999888.

The previous prime is 143339213. The next prime is 143339227. The reversal of 143339221 is 122933341.

143339221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 143339221 - 2³ = 143339213 is a prime.

It is a super-2 number, since 2×143339221² = 41092264553773682, which contains 22 as substring.

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 143339221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143339227) 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, 5050 + ... + 17668.

It is an arithmetic number, because the mean of its divisors is an integer number (18463060).

Almost surely, 2^143339221 is an apocalyptic number.

It is an amenable number.

143339221 is a deficient number, since it is larger than the sum of its proper divisors (4365259).

143339221 is a wasteful number, since it uses less digits than its factorization.

143339221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12963.

The product of its digits is 3888, while the sum is 28.

The square root of 143339221 is about 11972.4358841466. The cubic root of 143339221 is about 523.3453221410.

The spelling of 143339221 in words is "one hundred forty-three million, three hundred thirty-nine thousand, two hundred twenty-one".