12021023023 has 4 divisors (see below), whose sum is σ = 12023541088. Its totient is φ = 12018504960.

The previous prime is 12021022967. The next prime is 12021023029. The reversal of 12021023023 is 32032012021.

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

It is a cyclic number.

It is not a de Polignac number, because 12021023023 - 2¹⁷ = 12020891951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021022988 and 12021023006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021023029) 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, 1251858 + ... + 1261423.

It is an arithmetic number, because the mean of its divisors is an integer number (3005885272).

Almost surely, 2^12021023023 is an apocalyptic number.

12021023023 is a deficient number, since it is larger than the sum of its proper divisors (2518065).

12021023023 is an equidigital number, since it uses as much as digits as its factorization.

12021023023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518064.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12021023023 its reverse (32032012021), we get a palindrome (44053035044).

The spelling of 12021023023 in words is "twelve billion, twenty-one million, twenty-three thousand, twenty-three".