1216241167 has 4 divisors (see below), whose sum is σ = 1280253880. Its totient is φ = 1152228456.

The previous prime is 1216241141. The next prime is 1216241177. The reversal of 1216241167 is 7611426121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1216241167 - 2¹¹ = 1216239119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216241177) 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, 32006328 + ... + 32006365.

It is an arithmetic number, because the mean of its divisors is an integer number (320063470).

Almost surely, 2^1216241167 is an apocalyptic number.

1216241167 is a deficient number, since it is larger than the sum of its proper divisors (64012713).

1216241167 is an equidigital number, since it uses as much as digits as its factorization.

1216241167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64012712.

The product of its digits is 4032, while the sum is 31.

The square root of 1216241167 is about 34874.6493459074. The cubic root of 1216241167 is about 1067.4312173705.

Adding to 1216241167 its reverse (7611426121), we get a palindrome (8827667288).

The spelling of 1216241167 in words is "one billion, two hundred sixteen million, two hundred forty-one thousand, one hundred sixty-seven".