111011110101601 has 2 divisors, whose sum is σ = 111011110101602. Its totient is φ = 111011110101600.

The previous prime is 111011110101583. The next prime is 111011110101659. The reversal of 111011110101601 is 106101011110111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89000374868001 + 22010735233600 = 9434001^2 + 4691560^2 .

It is a cyclic number.

It is not a de Polignac number, because 111011110101601 - 2³⁷ = 110873671148129 is a prime.

It is not a weakly prime, because it can be changed into another prime (111011110101691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505555050800 + 55505555050801.

It is an arithmetic number, because the mean of its divisors is an integer number (55505555050801).

Almost surely, 2^{111011110101601} is an apocalyptic number.

It is an amenable number.

111011110101601 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011110101601 is an equidigital number, since it uses as much as digits as its factorization.

111011110101601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 16.

Adding to 111011110101601 its reverse (106101011110111), we get a palindrome (217112121211712).

The spelling of 111011110101601 in words is "one hundred eleven trillion, eleven billion, one hundred ten million, one hundred one thousand, six hundred one".