111231033120997 has 2 divisors, whose sum is σ = 111231033120998. Its totient is φ = 111231033120996.

The previous prime is 111231033120983. The next prime is 111231033121037. The reversal of 111231033120997 is 799021330132111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99890310096196 + 11340723024801 = 9994514^2 + 3367599^2 .

It is a cyclic number.

It is not a de Polignac number, because 111231033120997 - 2⁷ = 111231033120869 is a prime.

It is a super-2 number, since 2×111231033120997² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111238033120997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55615516560498 + 55615516560499.

It is an arithmetic number, because the mean of its divisors is an integer number (55615516560499).

Almost surely, 2^{111231033120997} is an apocalyptic number.

It is an amenable number.

111231033120997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111231033120997 is an equidigital number, since it uses as much as digits as its factorization.

111231033120997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 43.

The spelling of 111231033120997 in words is "one hundred eleven trillion, two hundred thirty-one billion, thirty-three million, one hundred twenty thousand, nine hundred ninety-seven".