111223230221993 has 2 divisors, whose sum is σ = 111223230221994. Its totient is φ = 111223230221992.

The previous prime is 111223230221977. The next prime is 111223230222101. The reversal of 111223230221993 is 399122032322111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111222165700864 + 1064521129 = 10546192^2 + 32627^2 .

It is a cyclic number.

It is not a de Polignac number, because 111223230221993 - 2⁴ = 111223230221977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111223230221993.

It is not a weakly prime, because it can be changed into another prime (111223230221293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611615110996 + 55611615110997.

It is an arithmetic number, because the mean of its divisors is an integer number (55611615110997).

Almost surely, 2^{111223230221993} is an apocalyptic number.

It is an amenable number.

111223230221993 is a deficient number, since it is larger than the sum of its proper divisors (1).

111223230221993 is an equidigital number, since it uses as much as digits as its factorization.

111223230221993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The spelling of 111223230221993 in words is "one hundred eleven trillion, two hundred twenty-three billion, two hundred thirty million, two hundred twenty-one thousand, nine hundred ninety-three".