221241333 has 16 divisors (see below), whose sum is σ = 298425600. Its totient is φ = 145782720.

The previous prime is 221241331. The next prime is 221241337. The reversal of 221241333 is 333142122.

It is not a de Polignac number, because 221241333 - 2¹ = 221241331 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221241331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234643 + ... + 235583.

It is an arithmetic number, because the mean of its divisors is an integer number (18651600).

Almost surely, 2^221241333 is an apocalyptic number.

It is an amenable number.

221241333 is a deficient number, since it is larger than the sum of its proper divisors (77184267).

221241333 is a wasteful number, since it uses less digits than its factorization.

221241333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772.

The product of its digits is 864, while the sum is 21.

The square root of 221241333 is about 14874.1834397724. The cubic root of 221241333 is about 604.8143528016.

Adding to 221241333 its reverse (333142122), we get a palindrome (554383455).

The spelling of 221241333 in words is "two hundred twenty-one million, two hundred forty-one thousand, three hundred thirty-three".