100443432217 has 2 divisors, whose sum is σ = 100443432218. Its totient is φ = 100443432216.

The previous prime is 100443432157. The next prime is 100443432269. The reversal of 100443432217 is 712234344001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97705631241 + 2737800976 = 312579^2 + 52324^2 .

It is a cyclic number.

It is not a de Polignac number, because 100443432217 - 2³⁵ = 66083693849 is a prime.

It is not a weakly prime, because it can be changed into another prime (100443432277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50221716108 + 50221716109.

It is an arithmetic number, because the mean of its divisors is an integer number (50221716109).

Almost surely, 2^100443432217 is an apocalyptic number.

It is an amenable number.

100443432217 is a deficient number, since it is larger than the sum of its proper divisors (1).

100443432217 is an equidigital number, since it uses as much as digits as its factorization.

100443432217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 100443432217 its reverse (712234344001), we get a palindrome (812677776218).

The spelling of 100443432217 in words is "one hundred billion, four hundred forty-three million, four hundred thirty-two thousand, two hundred seventeen".