1009942991227 has 2 divisors, whose sum is σ = 1009942991228. Its totient is φ = 1009942991226.

The previous prime is 1009942991207. The next prime is 1009942991231. The reversal of 1009942991227 is 7221992499001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1009942991227 - 2¹⁵ = 1009942958459 is a prime.

It is not a weakly prime, because it can be changed into another prime (1009942991207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504971495613 + 504971495614.

It is an arithmetic number, because the mean of its divisors is an integer number (504971495614).

Almost surely, 2^{1009942991227} is an apocalyptic number.

1009942991227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009942991227 is an equidigital number, since it uses as much as digits as its factorization.

1009942991227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The spelling of 1009942991227 in words is "one trillion, nine billion, nine hundred forty-two million, nine hundred ninety-one thousand, two hundred twenty-seven".