12231442021 has 8 divisors (see below), whose sum is σ = 12837024000. Its totient is φ = 11632008432.

The previous prime is 12231441997. The next prime is 12231442039. The reversal of 12231442021 is 12024413221.

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 12231442021 - 2²³ = 12223053413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12231441983 and 12231442001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231442921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533021 + ... + 1540978.

It is an arithmetic number, because the mean of its divisors is an integer number (1604628000).

Almost surely, 2^12231442021 is an apocalyptic number.

It is an amenable number.

12231442021 is a deficient number, since it is larger than the sum of its proper divisors (605581979).

12231442021 is a wasteful number, since it uses less digits than its factorization.

12231442021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074195.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12231442021 its reverse (12024413221), we get a palindrome (24255855242).

The spelling of 12231442021 in words is "twelve billion, two hundred thirty-one million, four hundred forty-two thousand, twenty-one".