12240420422 has 4 divisors (see below), whose sum is σ = 18360630636. Its totient is φ = 6120210210.

The previous prime is 12240420421. The next prime is 12240420443. The reversal of 12240420422 is 22402404221.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12240420421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060105104 + ... + 3060105107.

It is an arithmetic number, because the mean of its divisors is an integer number (4590157659).

Almost surely, 2^12240420422 is an apocalyptic number.

12240420422 is a deficient number, since it is larger than the sum of its proper divisors (6120210214).

12240420422 is an equidigital number, since it uses as much as digits as its factorization.

12240420422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6120210213.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 12240420422 its reverse (22402404221), we get a palindrome (34642824643).

The spelling of 12240420422 in words is "twelve billion, two hundred forty million, four hundred twenty thousand, four hundred twenty-two".