221003213223 has 32 divisors (see below), whose sum is σ = 321886656000. Its totient is φ = 134053476480.

The previous prime is 221003213213. The next prime is 221003213231. The reversal of 221003213223 is 322312300122.

It is a happy number.

It is not a de Polignac number, because 221003213223 - 2⁸ = 221003212967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221003213223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221003213203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15912040 + ... + 15925922.

It is an arithmetic number, because the mean of its divisors is an integer number (10058958000).

Almost surely, 2^221003213223 is an apocalyptic number.

221003213223 is a deficient number, since it is larger than the sum of its proper divisors (100883442777).

221003213223 is a wasteful number, since it uses less digits than its factorization.

221003213223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19719.

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

Adding to 221003213223 its reverse (322312300122), we get a palindrome (543315513345).

It can be divided in two parts, 22100 and 3213223, that added together give a palindrome (3235323).

The spelling of 221003213223 in words is "two hundred twenty-one billion, three million, two hundred thirteen thousand, two hundred twenty-three".