12110020997 has 4 divisors (see below), whose sum is σ = 12112809900. Its totient is φ = 12107232096.

The previous prime is 12110020981. The next prime is 12110021029. The reversal of 12110020997 is 79902001121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79902001121 = 17 ⋅4700117713.

It can be written as a sum of positive squares in 2 ways, for example, as 127215841 + 11982805156 = 11279^2 + 109466^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110020997 - 2⁴ = 12110020981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110070997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387928 + ... + 1396625.

It is an arithmetic number, because the mean of its divisors is an integer number (3028202475).

Almost surely, 2^12110020997 is an apocalyptic number.

It is an amenable number.

12110020997 is a deficient number, since it is larger than the sum of its proper divisors (2788903).

12110020997 is an equidigital number, since it uses as much as digits as its factorization.

12110020997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788902.

The product of its (nonzero) digits is 2268, while the sum is 32.

The spelling of 12110020997 in words is "twelve billion, one hundred ten million, twenty thousand, nine hundred ninety-seven".