1222111223 has 8 divisors (see below), whose sum is σ = 1232017200. Its totient is φ = 1212239808.

The previous prime is 1222111207. The next prime is 1222111273. The reversal of 1222111223 is 3221112221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222111223 - 2⁴ = 1222111207 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 (1222111273) 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, 64865 + ... + 81557.

It is an arithmetic number, because the mean of its divisors is an integer number (154002150).

Almost surely, 2^1222111223 is an apocalyptic number.

1222111223 is a deficient number, since it is larger than the sum of its proper divisors (9905977).

1222111223 is a wasteful number, since it uses less digits than its factorization.

1222111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17281.

The product of its digits is 96, while the sum is 17.

The square root of 1222111223 is about 34958.7073988727. The cubic root of 1222111223 is about 1069.1457423082.

Adding to 1222111223 its reverse (3221112221), we get a palindrome (4443223444).

The spelling of 1222111223 in words is "one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-three".