12221440041 has 4 divisors (see below), whose sum is σ = 16295253392. Its totient is φ = 8147626692.

The previous prime is 12221440001. The next prime is 12221440079. The reversal of 12221440041 is 14004412221.

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 12221440041 - 2¹⁴ = 12221423657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221440001) 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, 2036906671 + ... + 2036906676.

It is an arithmetic number, because the mean of its divisors is an integer number (4073813348).

Almost surely, 2^12221440041 is an apocalyptic number.

It is an amenable number.

12221440041 is a deficient number, since it is larger than the sum of its proper divisors (4073813351).

12221440041 is an equidigital number, since it uses as much as digits as its factorization.

12221440041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073813350.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12221440041 its reverse (14004412221), we get a palindrome (26225852262).

The spelling of 12221440041 in words is "twelve billion, two hundred twenty-one million, four hundred forty thousand, forty-one".