11312222017 has 2 divisors, whose sum is σ = 11312222018. Its totient is φ = 11312222016.

The previous prime is 11312221961. The next prime is 11312222023. The reversal of 11312222017 is 71022221311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9340062736 + 1972159281 = 96644^2 + 44409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11312222017 is a prime.

It is not a weakly prime, because it can be changed into another prime (11312222027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656111008 + 5656111009.

It is an arithmetic number, because the mean of its divisors is an integer number (5656111009).

Almost surely, 2^11312222017 is an apocalyptic number.

It is an amenable number.

11312222017 is a deficient number, since it is larger than the sum of its proper divisors (1).

11312222017 is an equidigital number, since it uses as much as digits as its factorization.

11312222017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 11312222017 its reverse (71022221311), we get a palindrome (82334443328).

The spelling of 11312222017 in words is "eleven billion, three hundred twelve million, two hundred twenty-two thousand, seventeen".