10216191 has 4 divisors (see below), whose sum is σ = 13621592. Its totient is φ = 6810792.

The previous prime is 10216189. The next prime is 10216229. The reversal of 10216191 is 19161201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19161201 = 3 ⋅6387067.

It is not a de Polignac number, because 10216191 - 2¹ = 10216189 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 (10216291) 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, 1702696 + ... + 1702701.

It is an arithmetic number, because the mean of its divisors is an integer number (3405398).

Almost surely, 2^10216191 is an apocalyptic number.

10216191 is a deficient number, since it is larger than the sum of its proper divisors (3405401).

10216191 is an equidigital number, since it uses as much as digits as its factorization.

10216191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405400.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 10216191 is about 3196.2776788008. The cubic root of 10216191 is about 216.9849777591.

Adding to 10216191 its reverse (19161201), we get a palindrome (29377392).

The spelling of 10216191 in words is "ten million, two hundred sixteen thousand, one hundred ninety-one".