1291178027211 has 8 divisors (see below), whose sum is σ = 1723887759360. Its totient is φ = 859626823272.

The previous prime is 1291178027137. The next prime is 1291178027281. The reversal of 1291178027211 is 1127208711921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1291178027211 - 2¹⁵ = 1291177994443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1291178027281) 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 7 ways as a sum of consecutive naturals, for example, 289629451 + ... + 289633908.

It is an arithmetic number, because the mean of its divisors is an integer number (215485969920).

Almost surely, 2^{1291178027211} is an apocalyptic number.

1291178027211 is a deficient number, since it is larger than the sum of its proper divisors (432709732149).

1291178027211 is an equidigital number, since it uses as much as digits as its factorization.

1291178027211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579264105.

The product of its (nonzero) digits is 28224, while the sum is 42.

The spelling of 1291178027211 in words is "one trillion, two hundred ninety-one billion, one hundred seventy-eight million, twenty-seven thousand, two hundred eleven".