12110020081 has 2 divisors, whose sum is σ = 12110020082. Its totient is φ = 12110020080.

The previous prime is 12110020033. The next prime is 12110020093. The reversal of 12110020081 is 18002001121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11431886400 + 678133681 = 106920^2 + 26041^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110020081 - 2¹⁷ = 12109889009 is a prime.

It is a super-2 number, since 2×12110020081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12110020781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055010040 + 6055010041.

It is an arithmetic number, because the mean of its divisors is an integer number (6055010041).

Almost surely, 2^12110020081 is an apocalyptic number.

It is an amenable number.

12110020081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12110020081 is an equidigital number, since it uses as much as digits as its factorization.

12110020081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

The spelling of 12110020081 in words is "twelve billion, one hundred ten million, twenty thousand, eighty-one".