220110111011081 has 2 divisors, whose sum is σ = 220110111011082. Its totient is φ = 220110111011080.

The previous prime is 220110111011039. The next prime is 220110111011117. The reversal of 220110111011081 is 180110111011022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209599164451600 + 10510946559481 = 14477540^2 + 3242059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220110111011081 is a prime.

It is a super-3 number, since 3×220110111011081³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (220110111014081) 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, 110055055505540 + 110055055505541.

It is an arithmetic number, because the mean of its divisors is an integer number (110055055505541).

Almost surely, 2^{220110111011081} is an apocalyptic number.

It is an amenable number.

220110111011081 is a deficient number, since it is larger than the sum of its proper divisors (1).

220110111011081 is an equidigital number, since it uses as much as digits as its factorization.

220110111011081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 20.

The spelling of 220110111011081 in words is "two hundred twenty trillion, one hundred ten billion, one hundred eleven million, eleven thousand, eighty-one".