221143033 has 8 divisors (see below), whose sum is σ = 236728800. Its totient is φ = 205951968.

The previous prime is 221143031. The next prime is 221143049. The reversal of 221143033 is 330341122.

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 221143033 - 2¹ = 221143031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 221143033.

It is not an unprimeable number, because it can be changed into a prime (221143031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97516 + ... + 99757.

It is an arithmetic number, because the mean of its divisors is an integer number (29591100).

Almost surely, 2^221143033 is an apocalyptic number.

It is an amenable number.

221143033 is a deficient number, since it is larger than the sum of its proper divisors (15585767).

221143033 is a wasteful number, since it uses less digits than its factorization.

221143033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197351.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 221143033 is about 14870.8786895731. The cubic root of 221143033 is about 604.7247642703.

Adding to 221143033 its reverse (330341122), we get a palindrome (551484155).

The spelling of 221143033 in words is "two hundred twenty-one million, one hundred forty-three thousand, thirty-three".