111220101193 has 2 divisors, whose sum is σ = 111220101194. Its totient is φ = 111220101192.

The previous prime is 111220101163. The next prime is 111220101217. The reversal of 111220101193 is 391101022111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56545035264 + 54675065929 = 237792^2 + 233827^2 .

It is an emirp because it is prime and its reverse (391101022111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111220101193 - 2⁹ = 111220100681 is a prime.

It is not a weakly prime, because it can be changed into another prime (111220101143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610050596 + 55610050597.

It is an arithmetic number, because the mean of its divisors is an integer number (55610050597).

Almost surely, 2^111220101193 is an apocalyptic number.

It is an amenable number.

111220101193 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220101193 is an equidigital number, since it uses as much as digits as its factorization.

111220101193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 111220101193 in words is "one hundred eleven billion, two hundred twenty million, one hundred one thousand, one hundred ninety-three".