11311222547 has 2 divisors, whose sum is σ = 11311222548. Its totient is φ = 11311222546.

The previous prime is 11311222343. The next prime is 11311222589. The reversal of 11311222547 is 74522211311.

It is a strong prime.

It is an emirp because it is prime and its reverse (74522211311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11311222547 - 2¹⁴ = 11311206163 is a prime.

It is a super-2 number, since 2×11311222547² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11311222597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655611273 + 5655611274.

It is an arithmetic number, because the mean of its divisors is an integer number (5655611274).

Almost surely, 2^11311222547 is an apocalyptic number.

11311222547 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311222547 is an equidigital number, since it uses as much as digits as its factorization.

11311222547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

Adding to 11311222547 its reverse (74522211311), we get a palindrome (85833433858).

The spelling of 11311222547 in words is "eleven billion, three hundred eleven million, two hundred twenty-two thousand, five hundred forty-seven".