1264221307 has 2 divisors, whose sum is σ = 1264221308. Its totient is φ = 1264221306.

The previous prime is 1264221241. The next prime is 1264221353. The reversal of 1264221307 is 7031224621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264221307 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264221367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632110653 + 632110654.

It is an arithmetic number, because the mean of its divisors is an integer number (632110654).

Almost surely, 2^1264221307 is an apocalyptic number.

1264221307 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264221307 is an equidigital number, since it uses as much as digits as its factorization.

1264221307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1264221307 is about 35555.8899058932. The cubic root of 1264221307 is about 1081.2871333790.

Adding to 1264221307 its reverse (7031224621), we get a palindrome (8295445928).

The spelling of 1264221307 in words is "one billion, two hundred sixty-four million, two hundred twenty-one thousand, three hundred seven".