221221223333 has 24 divisors (see below), whose sum is σ = 250532521344. Its totient is φ = 195088826240.

The previous prime is 221221223309. The next prime is 221221223369. The reversal of 221221223333 is 333322122122.

It is not a de Polignac number, because 221221223333 - 2²⁴ = 221204446117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221221223303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 470510 + ... + 814752.

It is an arithmetic number, because the mean of its divisors is an integer number (10438855056).

Almost surely, 2^221221223333 is an apocalyptic number.

It is an amenable number.

221221223333 is a deficient number, since it is larger than the sum of its proper divisors (29311298011).

221221223333 is a wasteful number, since it uses less digits than its factorization.

221221223333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344425 (or 344414 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

Adding to 221221223333 its reverse (333322122122), we get a palindrome (554543345455).

The spelling of 221221223333 in words is "two hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-three thousand, three hundred thirty-three".