11227819 has 2 divisors, whose sum is σ = 11227820. Its totient is φ = 11227818.

The previous prime is 11227817. The next prime is 11227849. The reversal of 11227819 is 91872211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11227819 - 2¹ = 11227817 is a prime.

It is a super-2 number, since 2×11227819² = 252127838993522, which contains 22 as substring.

Together with 11227817, it forms a pair of twin primes.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (11227817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5613909 + 5613910.

It is an arithmetic number, because the mean of its divisors is an integer number (5613910).

Almost surely, 2^11227819 is an apocalyptic number.

11227819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11227819 is an equidigital number, since it uses as much as digits as its factorization.

11227819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 31.

The square root of 11227819 is about 3350.7937865527. The cubic root of 11227819 is about 223.9228781592.

The spelling of 11227819 in words is "eleven million, two hundred twenty-seven thousand, eight hundred nineteen".