12021020023 has 8 divisors (see below), whose sum is σ = 12085281360. Its totient is φ = 11956929600.

The previous prime is 12021019949. The next prime is 12021020129. The reversal of 12021020023 is 32002012021.

12021020023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12021020023 - 2⁹ = 12021019511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021019985 and 12021020012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021029023) 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 7 ways as a sum of consecutive naturals, for example, 99573 + ... + 184273.

It is an arithmetic number, because the mean of its divisors is an integer number (1510660170).

Almost surely, 2^12021020023 is an apocalyptic number.

12021020023 is a deficient number, since it is larger than the sum of its proper divisors (64261337).

12021020023 is an equidigital number, since it uses as much as digits as its factorization.

12021020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85457.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 12021020023 its reverse (32002012021), we get a palindrome (44023032044).

The spelling of 12021020023 in words is "twelve billion, twenty-one million, twenty thousand, twenty-three".