11851219 has 2 divisors, whose sum is σ = 11851220. Its totient is φ = 11851218.

The previous prime is 11851201. The next prime is 11851291. The reversal of 11851219 is 91215811.

11851219 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (11851291) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (91215811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11851219 is a prime.

It is a super-2 number, since 2×11851219² = 280902783571922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11851519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5925609 + 5925610.

It is an arithmetic number, because the mean of its divisors is an integer number (5925610).

Almost surely, 2^11851219 is an apocalyptic number.

11851219 is a deficient number, since it is larger than the sum of its proper divisors (1).

11851219 is an equidigital number, since it uses as much as digits as its factorization.

11851219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 28.

The square root of 11851219 is about 3442.5599486429. The cubic root of 11851219 is about 227.9927347126.

The spelling of 11851219 in words is "eleven million, eight hundred fifty-one thousand, two hundred nineteen".