12023432021 has 8 divisors (see below), whose sum is σ = 12071916888. Its totient is φ = 11975040000.

The previous prime is 12023431993. The next prime is 12023432027.

12023432021 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 3140369521 + 8883062500 = 56039^2 + 94250^2 .

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 12023432021 - 2¹⁰ = 12023430997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12023431984 and 12023432002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023432027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242381 + ... + 287741.

It is an arithmetic number, because the mean of its divisors is an integer number (1508989611).

Almost surely, 2^12023432021 is an apocalyptic number.

It is an amenable number.

12023432021 is a deficient number, since it is larger than the sum of its proper divisors (48484867).

12023432021 is an equidigital number, since it uses as much as digits as its factorization.

12023432021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46423.

The product of its (nonzero) digits is 576, while the sum is 20.

The spelling of 12023432021 in words is "twelve billion, twenty-three million, four hundred thirty-two thousand, twenty-one".