11221212319 has 2 divisors, whose sum is σ = 11221212320. Its totient is φ = 11221212318.

The previous prime is 11221212313. The next prime is 11221212347. The reversal of 11221212319 is 91321212211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221212319 is a prime.

It is a super-2 number, since 2×11221212319² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11221212293 and 11221212302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221212313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610606159 + 5610606160.

It is an arithmetic number, because the mean of its divisors is an integer number (5610606160).

Almost surely, 2^11221212319 is an apocalyptic number.

11221212319 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221212319 is an equidigital number, since it uses as much as digits as its factorization.

11221212319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 25.

The spelling of 11221212319 in words is "eleven billion, two hundred twenty-one million, two hundred twelve thousand, three hundred nineteen".