12021323241 has 4 divisors (see below), whose sum is σ = 16028430992. Its totient is φ = 8014215492.

The previous prime is 12021323233. The next prime is 12021323243. The reversal of 12021323241 is 14232312021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12021323241 - 2³ = 12021323233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021323243) 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, 2003553871 + ... + 2003553876.

It is an arithmetic number, because the mean of its divisors is an integer number (4007107748).

Almost surely, 2^12021323241 is an apocalyptic number.

It is an amenable number.

12021323241 is a deficient number, since it is larger than the sum of its proper divisors (4007107751).

12021323241 is an equidigital number, since it uses as much as digits as its factorization.

12021323241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007107750.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12021323241 its reverse (14232312021), we get a palindrome (26253635262).

The spelling of 12021323241 in words is "twelve billion, twenty-one million, three hundred twenty-three thousand, two hundred forty-one".