12110003021 has 4 divisors (see below), whose sum is σ = 12111994044. Its totient is φ = 12108012000.

The previous prime is 12110002981. The next prime is 12110003027. The reversal of 12110003021 is 12030001121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5128564996 + 6981438025 = 71614^2 + 83555^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110003021 - 2¹⁰ = 12110001997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12110002993 and 12110003011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110003027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986360 + ... + 998561.

It is an arithmetic number, because the mean of its divisors is an integer number (3027998511).

Almost surely, 2^12110003021 is an apocalyptic number.

It is an amenable number.

12110003021 is a deficient number, since it is larger than the sum of its proper divisors (1991023).

12110003021 is an equidigital number, since it uses as much as digits as its factorization.

12110003021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991022.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 12110003021 its reverse (12030001121), we get a palindrome (24140004142).

The spelling of 12110003021 in words is "twelve billion, one hundred ten million, three thousand, twenty-one".