1321000127 has 2 divisors, whose sum is σ = 1321000128. Its totient is φ = 1321000126.

The previous prime is 1321000081. The next prime is 1321000129. The reversal of 1321000127 is 7210001231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321000127 - 2¹⁴ = 1320983743 is a prime.

It is a super-2 number, since 2×1321000127² = 3490082671068032258, which contains 22 as substring.

Together with 1321000129, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321000129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660500063 + 660500064.

It is an arithmetic number, because the mean of its divisors is an integer number (660500064).

Almost surely, 2^1321000127 is an apocalyptic number.

1321000127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321000127 is an equidigital number, since it uses as much as digits as its factorization.

1321000127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1321000127 is about 36345.5654378908. The cubic root of 1321000127 is about 1097.2382861583.

Adding to 1321000127 its reverse (7210001231), we get a palindrome (8531001358).

The spelling of 1321000127 in words is "one billion, three hundred twenty-one million, one hundred twenty-seven", and thus it is an aban number.