111221323 has 2 divisors, whose sum is σ = 111221324. Its totient is φ = 111221322.

The previous prime is 111221309. The next prime is 111221329. The reversal of 111221323 is 323122111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111221323 - 2⁵ = 111221291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111221297 and 111221306.

It is not a weakly prime, because it can be changed into another prime (111221329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610661 + 55610662.

It is an arithmetic number, because the mean of its divisors is an integer number (55610662).

Almost surely, 2^111221323 is an apocalyptic number.

111221323 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221323 is an equidigital number, since it uses as much as digits as its factorization.

111221323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 16.

The square root of 111221323 is about 10546.1520470739. The cubic root of 111221323 is about 480.9087572919.

Adding to 111221323 its reverse (323122111), we get a palindrome (434343434).

The spelling of 111221323 in words is "one hundred eleven million, two hundred twenty-one thousand, three hundred twenty-three".