1216432067 has 2 divisors, whose sum is σ = 1216432068. Its totient is φ = 1216432066.

The previous prime is 1216432037. The next prime is 1216432081. The reversal of 1216432067 is 7602346121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1216432067 - 2¹⁰ = 1216431043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1216432037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608216033 + 608216034.

It is an arithmetic number, because the mean of its divisors is an integer number (608216034).

Almost surely, 2^1216432067 is an apocalyptic number.

1216432067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216432067 is an equidigital number, since it uses as much as digits as its factorization.

1216432067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1216432067 is about 34877.3861836004. The cubic root of 1216432067 is about 1067.4870620951.

Adding to 1216432067 its reverse (7602346121), we get a palindrome (8818778188).

The spelling of 1216432067 in words is "one billion, two hundred sixteen million, four hundred thirty-two thousand, sixty-seven".