110111112161 has 2 divisors, whose sum is σ = 110111112162. Its totient is φ = 110111112160.

The previous prime is 110111112077. The next prime is 110111112211. The reversal of 110111112161 is 161211111011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110104512400 + 6599761 = 331820^2 + 2569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110111112161 is a prime.

It is not a weakly prime, because it can be changed into another prime (110111112061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055556080 + 55055556081.

It is an arithmetic number, because the mean of its divisors is an integer number (55055556081).

Almost surely, 2^110111112161 is an apocalyptic number.

It is an amenable number.

110111112161 is a deficient number, since it is larger than the sum of its proper divisors (1).

110111112161 is an equidigital number, since it uses as much as digits as its factorization.

110111112161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 17.

Adding to 110111112161 its reverse (161211111011), we get a palindrome (271322223172).

The spelling of 110111112161 in words is "one hundred ten billion, one hundred eleven million, one hundred twelve thousand, one hundred sixty-one".