1321223107 has 2 divisors, whose sum is σ = 1321223108. Its totient is φ = 1321223106.

The previous prime is 1321223089. The next prime is 1321223143. The reversal of 1321223107 is 7013221231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321223107 - 2²³ = 1312834499 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321223147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660611553 + 660611554.

It is an arithmetic number, because the mean of its divisors is an integer number (660611554).

Almost surely, 2^1321223107 is an apocalyptic number.

1321223107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321223107 is an equidigital number, since it uses as much as digits as its factorization.

1321223107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1321223107 is about 36348.6328078512. The cubic root of 1321223107 is about 1097.3000192910.

Adding to 1321223107 its reverse (7013221231), we get a palindrome (8334444338).

The spelling of 1321223107 in words is "one billion, three hundred twenty-one million, two hundred twenty-three thousand, one hundred seven".