1111213223 has 2 divisors, whose sum is σ = 1111213224. Its totient is φ = 1111213222.

The previous prime is 1111213189. The next prime is 1111213231. The reversal of 1111213223 is 3223121111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111213223 - 2²² = 1107018919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111213273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555606611 + 555606612.

It is an arithmetic number, because the mean of its divisors is an integer number (555606612).

Almost surely, 2^1111213223 is an apocalyptic number.

1111213223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111213223 is an equidigital number, since it uses as much as digits as its factorization.

1111213223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 1111213223 is about 33334.8649764777. The cubic root of 1111213223 is about 1035.7758962174.

Adding to 1111213223 its reverse (3223121111), we get a palindrome (4334334334).

The spelling of 1111213223 in words is "one billion, one hundred eleven million, two hundred thirteen thousand, two hundred twenty-three".