111011111201 has 2 divisors, whose sum is σ = 111011111202. Its totient is φ = 111011111200.

The previous prime is 111011111147. The next prime is 111011111221. The reversal of 111011111201 is 102111110111.

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., 60036760576 + 50974350625 = 245024^2 + 225775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111011111201 is a prime.

It is a super-3 number, since 3×111011111201³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (111011111221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505555600 + 55505555601.

It is an arithmetic number, because the mean of its divisors is an integer number (55505555601).

Almost surely, 2^111011111201 is an apocalyptic number.

It is an amenable number.

111011111201 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011111201 is an equidigital number, since it uses as much as digits as its factorization.

111011111201 is an evil number, because the sum of its binary digits is even.

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

Adding to 111011111201 its reverse (102111110111), we get a palindrome (213122221312).

The spelling of 111011111201 in words is "one hundred eleven billion, eleven million, one hundred eleven thousand, two hundred one".