111001101010061 has 2 divisors, whose sum is σ = 111001101010062. Its totient is φ = 111001101010060.

The previous prime is 111001101010027. The next prime is 111001101010123. The reversal of 111001101010061 is 160010101100111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110327839734436 + 673261275625 = 10503706^2 + 820525^2 .

It is an emirp because it is prime and its reverse (160010101100111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111001101010061 - 2³⁰ = 111000027268237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111001101000061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500550505030 + 55500550505031.

It is an arithmetic number, because the mean of its divisors is an integer number (55500550505031).

Almost surely, 2^{111001101010061} is an apocalyptic number.

It is an amenable number.

111001101010061 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001101010061 is an equidigital number, since it uses as much as digits as its factorization.

111001101010061 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 14.

Adding to 111001101010061 its reverse (160010101100111), we get a palindrome (271011202110172).

The spelling of 111001101010061 in words is "one hundred eleven trillion, one billion, one hundred one million, ten thousand, sixty-one".