111091018201 has 2 divisors, whose sum is σ = 111091018202. Its totient is φ = 111091018200.

The previous prime is 111091018183. The next prime is 111091018217. The reversal of 111091018201 is 102810190111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104523536601 + 6567481600 = 323301^2 + 81040^2 .

It is an emirp because it is prime and its reverse (102810190111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111091018201 - 2⁹ = 111091017689 is a prime.

It is not a weakly prime, because it can be changed into another prime (111091018001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55545509100 + 55545509101.

It is an arithmetic number, because the mean of its divisors is an integer number (55545509101).

Almost surely, 2^111091018201 is an apocalyptic number.

It is an amenable number.

111091018201 is a deficient number, since it is larger than the sum of its proper divisors (1).

111091018201 is an equidigital number, since it uses as much as digits as its factorization.

111091018201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 111091018201 in words is "one hundred eleven billion, ninety-one million, eighteen thousand, two hundred one".