1322231111 has 4 divisors (see below), whose sum is σ = 1322461824. Its totient is φ = 1322000400.

The previous prime is 1322231089. The next prime is 1322231159. The reversal of 1322231111 is 1111322231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1322231111 is a prime.

It is a super-2 number, since 2×1322231111² = 3496590221792588642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1322231111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322231161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106535 + ... + 118296.

It is an arithmetic number, because the mean of its divisors is an integer number (330615456).

Almost surely, 2^1322231111 is an apocalyptic number.

1322231111 is a deficient number, since it is larger than the sum of its proper divisors (230713).

1322231111 is an equidigital number, since it uses as much as digits as its factorization.

1322231111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230712.

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

The square root of 1322231111 is about 36362.4959401854. The cubic root of 1322231111 is about 1097.5790036233.

Adding to 1322231111 its reverse (1111322231), we get a palindrome (2433553342).

It can be divided in two parts, 1322231 and 111, that multiplied together give a palindrome (146767641).

The spelling of 1322231111 in words is "one billion, three hundred twenty-two million, two hundred thirty-one thousand, one hundred eleven".