111000423297161 has 2 divisors, whose sum is σ = 111000423297162. Its totient is φ = 111000423297160.

The previous prime is 111000423297119. The next prime is 111000423297167. The reversal of 111000423297161 is 161792324000111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101027023488400 + 9973399808761 = 10051220^2 + 3158069^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000423297161 - 2¹⁰ = 111000423296137 is a prime.

It is not a weakly prime, because it can be changed into another prime (111000423297167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500211648580 + 55500211648581.

It is an arithmetic number, because the mean of its divisors is an integer number (55500211648581).

Almost surely, 2^{111000423297161} is an apocalyptic number.

It is an amenable number.

111000423297161 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000423297161 is an equidigital number, since it uses as much as digits as its factorization.

111000423297161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

Adding to 111000423297161 its reverse (161792324000111), we get a palindrome (272792747297272).

The spelling of 111000423297161 in words is "one hundred eleven trillion, four hundred twenty-three million, two hundred ninety-seven thousand, one hundred sixty-one".