111122209997 has 2 divisors, whose sum is σ = 111122209998. Its totient is φ = 111122209996.

The previous prime is 111122209931. The next prime is 111122210009. The reversal of 111122209997 is 799902221111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66384037801 + 44738172196 = 257651^2 + 211514^2 .

It is a cyclic number.

It is not a de Polignac number, because 111122209997 - 2¹⁴ = 111122193613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111122209397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561104998 + 55561104999.

It is an arithmetic number, because the mean of its divisors is an integer number (55561104999).

Almost surely, 2^111122209997 is an apocalyptic number.

It is an amenable number.

111122209997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122209997 is an equidigital number, since it uses as much as digits as its factorization.

111122209997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 44.

The spelling of 111122209997 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred nine thousand, nine hundred ninety-seven".