117211271 has 2 divisors, whose sum is σ = 117211272. Its totient is φ = 117211270.

The previous prime is 117211267. The next prime is 117211327. The reversal of 117211271 is 172112711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117211271 - 2² = 117211267 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117211231) 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 as a sum of consecutive naturals, namely, 58605635 + 58605636.

It is an arithmetic number, because the mean of its divisors is an integer number (58605636).

Almost surely, 2^117211271 is an apocalyptic number.

117211271 is a deficient number, since it is larger than the sum of its proper divisors (1).

117211271 is an equidigital number, since it uses as much as digits as its factorization.

117211271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 196, while the sum is 23.

The square root of 117211271 is about 10826.4154270931. The cubic root of 117211271 is about 489.3915410224.

Adding to 117211271 its reverse (172112711), we get a palindrome (289323982).

The spelling of 117211271 in words is "one hundred seventeen million, two hundred eleven thousand, two hundred seventy-one".