12244002221 has 12 divisors (see below), whose sum is σ = 13461289632. Its totient is φ = 11128425000.

The previous prime is 12244002143. The next prime is 12244002257. The reversal of 12244002221 is 12220044221.

It is a de Polignac number, because none of the positive numbers 2^k-12244002221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12244002193 and 12244002202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12244007221) 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 11 ways as a sum of consecutive naturals, for example, 736046 + ... + 752496.

It is an arithmetic number, because the mean of its divisors is an integer number (1121774136).

Almost surely, 2^12244002221 is an apocalyptic number.

12244002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12244002221 is a deficient number, since it is larger than the sum of its proper divisors (1217287411).

12244002221 is a wasteful number, since it uses less digits than its factorization.

12244002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22624 (or 22613 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12244002221 its reverse (12220044221), we get a palindrome (24464046442).

The spelling of 12244002221 in words is "twelve billion, two hundred forty-four million, two thousand, two hundred twenty-one".