1251222607 has 2 divisors, whose sum is σ = 1251222608. Its totient is φ = 1251222606.

The previous prime is 1251222587. The next prime is 1251222653. The reversal of 1251222607 is 7062221521.

It is a weak prime.

It is an emirp because it is prime and its reverse (7062221521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1251222607 - 2¹⁵ = 1251189839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1251222107) 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, 625611303 + 625611304.

It is an arithmetic number, because the mean of its divisors is an integer number (625611304).

Almost surely, 2^1251222607 is an apocalyptic number.

1251222607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251222607 is an equidigital number, since it uses as much as digits as its factorization.

1251222607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1251222607 is about 35372.6251075602. The cubic root of 1251222607 is about 1077.5684341668.

The spelling of 1251222607 in words is "one billion, two hundred fifty-one million, two hundred twenty-two thousand, six hundred seven".