12012231023 has 4 divisors (see below), whose sum is σ = 12936248808. Its totient is φ = 11088213240.

The previous prime is 12012231017. The next prime is 12012231029. The reversal of 12012231023 is 32013221021.

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

It is an interprime number because it is at equal distance from previous prime (12012231017) and next prime (12012231029).

It is not a de Polignac number, because 12012231023 - 2³² = 7717263727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012230992 and 12012231010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012231029) 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, 462008873 + ... + 462008898.

It is an arithmetic number, because the mean of its divisors is an integer number (3234062202).

Almost surely, 2^12012231023 is an apocalyptic number.

12012231023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12012231023 is a deficient number, since it is larger than the sum of its proper divisors (924017785).

12012231023 is an equidigital number, since it uses as much as digits as its factorization.

12012231023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924017784.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12012231023 its reverse (32013221021), we get a palindrome (44025452044).

The spelling of 12012231023 in words is "twelve billion, twelve million, two hundred thirty-one thousand, twenty-three".