111231120097 has 2 divisors, whose sum is σ = 111231120098. Its totient is φ = 111231120096.

The previous prime is 111231120083. The next prime is 111231120131. The reversal of 111231120097 is 790021132111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85051556496 + 26179563601 = 291636^2 + 161801^2 .

It is a cyclic number.

It is not a de Polignac number, because 111231120097 - 2¹⁹ = 111230595809 is a prime.

It is not a weakly prime, because it can be changed into another prime (111231520097) 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, 55615560048 + 55615560049.

It is an arithmetic number, because the mean of its divisors is an integer number (55615560049).

Almost surely, 2^111231120097 is an apocalyptic number.

It is an amenable number.

111231120097 is a deficient number, since it is larger than the sum of its proper divisors (1).

111231120097 is an equidigital number, since it uses as much as digits as its factorization.

111231120097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 28.

The spelling of 111231120097 in words is "one hundred eleven billion, two hundred thirty-one million, one hundred twenty thousand, ninety-seven".