1323221101 has 2 divisors, whose sum is σ = 1323221102. Its totient is φ = 1323221100.

The previous prime is 1323221071. The next prime is 1323221111. The reversal of 1323221101 is 1011223231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756305001 + 566916100 = 27501^2 + 23810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323221101 - 2²⁹ = 786350189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323221111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661610550 + 661610551.

It is an arithmetic number, because the mean of its divisors is an integer number (661610551).

Almost surely, 2^1323221101 is an apocalyptic number.

It is an amenable number.

1323221101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323221101 is an equidigital number, since it uses as much as digits as its factorization.

1323221101 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1323221101 is about 36376.1061824929. The cubic root of 1323221101 is about 1097.8528642605.

Adding to 1323221101 its reverse (1011223231), we get a palindrome (2334444332).

The spelling of 1323221101 in words is "one billion, three hundred twenty-three million, two hundred twenty-one thousand, one hundred one".