11221211959 has 2 divisors, whose sum is σ = 11221211960. Its totient is φ = 11221211958.

The previous prime is 11221211951. The next prime is 11221211983. The reversal of 11221211959 is 95911212211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11221211959 - 2³ = 11221211951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221211951) 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, 5610605979 + 5610605980.

It is an arithmetic number, because the mean of its divisors is an integer number (5610605980).

Almost surely, 2^11221211959 is an apocalyptic number.

11221211959 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221211959 is an equidigital number, since it uses as much as digits as its factorization.

11221211959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 34.

The spelling of 11221211959 in words is "eleven billion, two hundred twenty-one million, two hundred eleven thousand, nine hundred fifty-nine".