12110220121081 has 2 divisors, whose sum is σ = 12110220121082. Its totient is φ = 12110220121080.

The previous prime is 12110220121079. The next prime is 12110220121121. The reversal of 12110220121081 is 18012102201121.

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., 9729938911225 + 2380281209856 = 3119285^2 + 1542816^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110220121081 - 2¹ = 12110220121079 is a prime.

It is a super-2 number, since 2×12110220121081² (a number of 27 digits) contains 22 as substring.

Together with 12110220121079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12110220121481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055110060540 + 6055110060541.

It is an arithmetic number, because the mean of its divisors is an integer number (6055110060541).

Almost surely, 2^{12110220121081} is an apocalyptic number.

It is an amenable number.

12110220121081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12110220121081 is an equidigital number, since it uses as much as digits as its factorization.

12110220121081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 22.

The spelling of 12110220121081 in words is "twelve trillion, one hundred ten billion, two hundred twenty million, one hundred twenty-one thousand, eighty-one".