1211327117 has 32 divisors (see below), whose sum is σ = 1640943360. Its totient is φ = 863493120.

The previous prime is 1211327111. The next prime is 1211327147. The reversal of 1211327117 is 7117231121.

It is not a de Polignac number, because 1211327117 - 2⁸ = 1211326861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211327111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107759 + ... + 118467.

It is an arithmetic number, because the mean of its divisors is an integer number (51279480).

Almost surely, 2^1211327117 is an apocalyptic number.

It is an amenable number.

1211327117 is a deficient number, since it is larger than the sum of its proper divisors (429616243).

1211327117 is a wasteful number, since it uses less digits than its factorization.

1211327117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10853.

The product of its digits is 588, while the sum is 26.

The square root of 1211327117 is about 34804.1249997755. The cubic root of 1211327117 is about 1065.9916753724.

Adding to 1211327117 its reverse (7117231121), we get a palindrome (8328558238).

The spelling of 1211327117 in words is "one billion, two hundred eleven million, three hundred twenty-seven thousand, one hundred seventeen".