110123220123691 has 2 divisors, whose sum is σ = 110123220123692. Its totient is φ = 110123220123690.

The previous prime is 110123220123677. The next prime is 110123220123811. The reversal of 110123220123691 is 196321022321011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 110123220123691 - 2²¹ = 110123218026539 is a prime.

It is a super-2 number, since 2×110123220123691² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (110123220123391) 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, 55061610061845 + 55061610061846.

It is an arithmetic number, because the mean of its divisors is an integer number (55061610061846).

Almost surely, 2^{110123220123691} is an apocalyptic number.

110123220123691 is a deficient number, since it is larger than the sum of its proper divisors (1).

110123220123691 is an equidigital number, since it uses as much as digits as its factorization.

110123220123691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 110123220123691 in words is "one hundred ten trillion, one hundred twenty-three billion, two hundred twenty million, one hundred twenty-three thousand, six hundred ninety-one".