111101111201 has 2 divisors, whose sum is σ = 111101111202. Its totient is φ = 111101111200.

The previous prime is 111101111183. The next prime is 111101111207. The reversal of 111101111201 is 102111101111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91842333025 + 19258778176 = 303055^2 + 138776^2 .

It is a cyclic number.

It is not a de Polignac number, because 111101111201 - 2⁶ = 111101111137 is a prime.

It is not a weakly prime, because it can be changed into another prime (111101111207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550555600 + 55550555601.

It is an arithmetic number, because the mean of its divisors is an integer number (55550555601).

Almost surely, 2^111101111201 is an apocalyptic number.

It is an amenable number.

111101111201 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101111201 is an equidigital number, since it uses as much as digits as its factorization.

111101111201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111101111201 its reverse (102111101111), we get a palindrome (213212212312).

The spelling of 111101111201 in words is "one hundred eleven billion, one hundred one million, one hundred eleven thousand, two hundred one".