12021332231321 has 4 divisors (see below), whose sum is σ = 13738665407232. Its totient is φ = 10303999055412.

The previous prime is 12021332231303. The next prime is 12021332231327. The reversal of 12021332231321 is 12313223312021.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021332231321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021332231327) 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, 858666587945 + ... + 858666587958.

It is an arithmetic number, because the mean of its divisors is an integer number (3434666351808).

Almost surely, 2^{12021332231321} is an apocalyptic number.

It is an amenable number.

12021332231321 is a deficient number, since it is larger than the sum of its proper divisors (1717333175911).

12021332231321 is an equidigital number, since it uses as much as digits as its factorization.

12021332231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717333175910.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12021332231321 its reverse (12313223312021), we get a palindrome (24334555543342).

The spelling of 12021332231321 in words is "twelve trillion, twenty-one billion, three hundred thirty-two million, two hundred thirty-one thousand, three hundred twenty-one".