111201309997 has 2 divisors, whose sum is σ = 111201309998. Its totient is φ = 111201309996.

The previous prime is 111201309979. The next prime is 111201310019. The reversal of 111201309997 is 799903102111.

Together with previous prime (111201309979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110789788201 + 411521796 = 332851^2 + 20286^2 .

It is a cyclic number.

It is not a de Polignac number, because 111201309997 - 2³⁵ = 76841571629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111201309907) 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, 55600654998 + 55600654999.

It is an arithmetic number, because the mean of its divisors is an integer number (55600654999).

Almost surely, 2^111201309997 is an apocalyptic number.

It is an amenable number.

111201309997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111201309997 is an equidigital number, since it uses as much as digits as its factorization.

111201309997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 43.

The spelling of 111201309997 in words is "one hundred eleven billion, two hundred one million, three hundred nine thousand, nine hundred ninety-seven".