11122778394473 has 2 divisors, whose sum is σ = 11122778394474. Its totient is φ = 11122778394472.

The previous prime is 11122778394407. The next prime is 11122778394487. The reversal of 11122778394473 is 37449387722111.

11122778394473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11118043303129 + 4735091344 = 3334373^2 + 68812^2 .

It is an emirp because it is prime and its reverse (37449387722111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11122778394473 - 2¹⁸ = 11122778132329 is a prime.

It is not a weakly prime, because it can be changed into another prime (11122778394773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561389197236 + 5561389197237.

It is an arithmetic number, because the mean of its divisors is an integer number (5561389197237).

Almost surely, 2^{11122778394473} is an apocalyptic number.

It is an amenable number.

11122778394473 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122778394473 is an equidigital number, since it uses as much as digits as its factorization.

11122778394473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14224896, while the sum is 59.

The spelling of 11122778394473 in words is "eleven trillion, one hundred twenty-two billion, seven hundred seventy-eight million, three hundred ninety-four thousand, four hundred seventy-three".