11216819 has 2 divisors, whose sum is σ = 11216820. Its totient is φ = 11216818.

The previous prime is 11216813. The next prime is 11216861. The reversal of 11216819 is 91861211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11216819 - 2⁸ = 11216563 is a prime.

It is a super-2 number, since 2×11216819² = 251634056957522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 11216791 and 11216800.

It is not a weakly prime, because it can be changed into another prime (11216813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608409 + 5608410.

It is an arithmetic number, because the mean of its divisors is an integer number (5608410).

Almost surely, 2^11216819 is an apocalyptic number.

11216819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11216819 is an equidigital number, since it uses as much as digits as its factorization.

11216819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 29.

The square root of 11216819 is about 3349.1519822188. The cubic root of 11216819 is about 223.8497278146.

The spelling of 11216819 in words is "eleven million, two hundred sixteen thousand, eight hundred nineteen".