110111221199687 has 2 divisors, whose sum is σ = 110111221199688. Its totient is φ = 110111221199686.

The previous prime is 110111221199633. The next prime is 110111221199723. The reversal of 110111221199687 is 786991122111011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110111221199687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110111221199387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055610599843 + 55055610599844.

It is an arithmetic number, because the mean of its divisors is an integer number (55055610599844).

Almost surely, 2^{110111221199687} is an apocalyptic number.

110111221199687 is a deficient number, since it is larger than the sum of its proper divisors (1).

110111221199687 is an equidigital number, since it uses as much as digits as its factorization.

110111221199687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 50.

The spelling of 110111221199687 in words is "one hundred ten trillion, one hundred eleven billion, two hundred twenty-one million, one hundred ninety-nine thousand, six hundred eighty-seven".