12244413021 has 4 divisors (see below), whose sum is σ = 16325884032. Its totient is φ = 8162942012.

The previous prime is 12244413017. The next prime is 12244413023. The reversal of 12244413021 is 12031444221.

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 not a de Polignac number, because 12244413021 - 2² = 12244413017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12244412982 and 12244413000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12244413023) 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, 2040735501 + ... + 2040735506.

It is an arithmetic number, because the mean of its divisors is an integer number (4081471008).

Almost surely, 2^12244413021 is an apocalyptic number.

It is an amenable number.

12244413021 is a deficient number, since it is larger than the sum of its proper divisors (4081471011).

12244413021 is an equidigital number, since it uses as much as digits as its factorization.

12244413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081471010.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 12244413021 its reverse (12031444221), we get a palindrome (24275857242).

The spelling of 12244413021 in words is "twelve billion, two hundred forty-four million, four hundred thirteen thousand, twenty-one".