11221021219 has 2 divisors, whose sum is σ = 11221021220. Its totient is φ = 11221021218.

The previous prime is 11221021111. The next prime is 11221021289. The reversal of 11221021219 is 91212012211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11221021219 - 2¹¹ = 11221019171 is a prime.

It is a super-2 number, since 2×11221021219² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11221021219.

It is not a weakly prime, because it can be changed into another prime (11221021289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610510609 + 5610510610.

It is an arithmetic number, because the mean of its divisors is an integer number (5610510610).

Almost surely, 2^11221021219 is an apocalyptic number.

11221021219 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221021219 is an equidigital number, since it uses as much as digits as its factorization.

11221021219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 11221021219 in words is "eleven billion, two hundred twenty-one million, twenty-one thousand, two hundred nineteen".