1321106273 has 2 divisors, whose sum is σ = 1321106274. Its totient is φ = 1321106272.

The previous prime is 1321106263. The next prime is 1321106291. The reversal of 1321106273 is 3726011231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1211527249 + 109579024 = 34807^2 + 10468^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321106273 - 2¹⁰ = 1321105249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321106203) 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, 660553136 + 660553137.

It is an arithmetic number, because the mean of its divisors is an integer number (660553137).

Almost surely, 2^1321106273 is an apocalyptic number.

It is an amenable number.

1321106273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321106273 is an equidigital number, since it uses as much as digits as its factorization.

1321106273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1321106273 is about 36347.0256417220. The cubic root of 1321106273 is about 1097.2676740777.

The spelling of 1321106273 in words is "one billion, three hundred twenty-one million, one hundred six thousand, two hundred seventy-three".