221222222223 has 8 divisors (see below), whose sum is σ = 302934935088. Its totient is φ = 143495495424.

The previous prime is 221222222209. The next prime is 221222222233. The reversal of 221222222223 is 322222222122.

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

It is not a de Polignac number, because 221222222223 - 2⁵ = 221222222191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221222222193 and 221222222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222222203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996496386 + ... + 996496607.

It is an arithmetic number, because the mean of its divisors is an integer number (37866866886).

Almost surely, 2^221222222223 is an apocalyptic number.

221222222223 is a deficient number, since it is larger than the sum of its proper divisors (81712712865).

221222222223 is a wasteful number, since it uses less digits than its factorization.

221222222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992993033.

The product of its digits is 3072, while the sum is 24.

Adding to 221222222223 its reverse (322222222122), we get a palindrome (543444444345).

The spelling of 221222222223 in words is "two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-three".