12421022442 has 32 divisors (see below), whose sum is σ = 26411246208. Its totient is φ = 3885600576.

The previous prime is 12421022429. The next prime is 12421022479. The reversal of 12421022442 is 24422012421.

It is a happy number.

12421022442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841813 + ... + 856440.

It is an arithmetic number, because the mean of its divisors is an integer number (825351444).

Almost surely, 2^12421022442 is an apocalyptic number.

12421022442 is an abundant number, since it is smaller than the sum of its proper divisors (13990223766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12421022442 is a wasteful number, since it uses less digits than its factorization.

12421022442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698334.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 12421022442 its reverse (24422012421), we get a palindrome (36843034863).

The spelling of 12421022442 in words is "twelve billion, four hundred twenty-one million, twenty-two thousand, four hundred forty-two".