12220013242 has 4 divisors (see below), whose sum is σ = 18330019866. Its totient is φ = 6110006620.

The previous prime is 12220013233. The next prime is 12220013261. The reversal of 12220013242 is 24231002221.

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

It can be written as a sum of positive squares in only one way, i.e., 10674815761 + 1545197481 = 103319^2 + 39309^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3055003309 + ... + 3055003312.

Almost surely, 2^12220013242 is an apocalyptic number.

12220013242 is a deficient number, since it is larger than the sum of its proper divisors (6110006624).

12220013242 is an equidigital number, since it uses as much as digits as its factorization.

12220013242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110006623.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12220013242 its reverse (24231002221), we get a palindrome (36451015463).

The spelling of 12220013242 in words is "twelve billion, two hundred twenty million, thirteen thousand, two hundred forty-two".