1273212966009 has 4 divisors (see below), whose sum is σ = 1697617288016. Its totient is φ = 848808644004.

The previous prime is 1273212965923. The next prime is 1273212966097. The reversal of 1273212966009 is 9006692123721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1273212966009 - 2¹⁵ = 1273212933241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1273212966709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212202160999 + ... + 212202161004.

It is an arithmetic number, because the mean of its divisors is an integer number (424404322004).

Almost surely, 2^{1273212966009} is an apocalyptic number.

It is an amenable number.

1273212966009 is a deficient number, since it is larger than the sum of its proper divisors (424404322007).

1273212966009 is an equidigital number, since it uses as much as digits as its factorization.

1273212966009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424404322006.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 1273212966009 in words is "one trillion, two hundred seventy-three billion, two hundred twelve million, nine hundred sixty-six thousand, nine".