111610001 has 2 divisors, whose sum is σ = 111610002. Its totient is φ = 111610000.

The previous prime is 111609977. The next prime is 111610021. The reversal of 111610001 is 100016111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100982401 + 10627600 = 10049^2 + 3260^2 .

It is a cyclic number.

It is not a de Polignac number, because 111610001 - 2¹⁸ = 111347857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (111610021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55805000 + 55805001.

It is an arithmetic number, because the mean of its divisors is an integer number (55805001).

Almost surely, 2^111610001 is an apocalyptic number.

It is an amenable number.

111610001 is a deficient number, since it is larger than the sum of its proper divisors (1).

111610001 is an equidigital number, since it uses as much as digits as its factorization.

111610001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 111610001 is about 10564.5634552498. The cubic root of 111610001 is about 481.4683062859.

Adding to 111610001 its reverse (100016111), we get a palindrome (211626112).

The spelling of 111610001 in words is "one hundred eleven million, six hundred ten thousand, one".