111227817593 has 2 divisors, whose sum is σ = 111227817594. Its totient is φ = 111227817592.

The previous prime is 111227817581. The next prime is 111227817611. The reversal of 111227817593 is 395718722111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110933626489 + 294191104 = 333067^2 + 17152^2 .

It is an emirp because it is prime and its reverse (395718722111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111227817593 - 2⁶ = 111227817529 is a prime.

It is not a weakly prime, because it can be changed into another prime (111227817563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55613908796 + 55613908797.

It is an arithmetic number, because the mean of its divisors is an integer number (55613908797).

Almost surely, 2^111227817593 is an apocalyptic number.

It is an amenable number.

111227817593 is a deficient number, since it is larger than the sum of its proper divisors (1).

111227817593 is an equidigital number, since it uses as much as digits as its factorization.

111227817593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 47.

The spelling of 111227817593 in words is "one hundred eleven billion, two hundred twenty-seven million, eight hundred seventeen thousand, five hundred ninety-three".