12113023021 has 32 divisors (see below), whose sum is σ = 13854602880. Its totient is φ = 10489248000.

The previous prime is 12113023009. The next prime is 12113023033. The reversal of 12113023021 is 12032031121.

12113023021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12113023009) and next prime (12113023033).

It is not a de Polignac number, because 12113023021 - 2⁵ = 12113022989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12113022986 and 12113023004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113023121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12790470 + ... + 12791416.

It is an arithmetic number, because the mean of its divisors is an integer number (432956340).

Almost surely, 2^12113023021 is an apocalyptic number.

12113023021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12113023021 is a deficient number, since it is larger than the sum of its proper divisors (1741579859).

12113023021 is a wasteful number, since it uses less digits than its factorization.

12113023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12113023021 its reverse (12032031121), we get a palindrome (24145054142).

The spelling of 12113023021 in words is "twelve billion, one hundred thirteen million, twenty-three thousand, twenty-one".