221222222323 has 8 divisors (see below), whose sum is σ = 222953634000. Its totient is φ = 219496316928.

The previous prime is 221222222303. The next prime is 221222222381. The reversal of 221222222323 is 323222222122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221222222323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221222222303) 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 7 ways as a sum of consecutive naturals, for example, 1295886 + ... + 1456627.

It is an arithmetic number, because the mean of its divisors is an integer number (27869204250).

Almost surely, 2^221222222323 is an apocalyptic number.

221222222323 is a deficient number, since it is larger than the sum of its proper divisors (1731411677).

221222222323 is a wasteful number, since it uses less digits than its factorization.

221222222323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753141.

The product of its digits is 4608, while the sum is 25.

Adding to 221222222323 its reverse (323222222122), we get a palindrome (544444444445).

The spelling of 221222222323 in words is "two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, three hundred twenty-three".