12420221042 has 8 divisors (see below), whose sum is σ = 18631189632. Its totient is φ = 6209824500.

The previous prime is 12420221003. The next prime is 12420221089. The reversal of 12420221042 is 24012202421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83834 + ... + 178517.

It is an arithmetic number, because the mean of its divisors is an integer number (2328898704).

Almost surely, 2^12420221042 is an apocalyptic number.

12420221042 is a deficient number, since it is larger than the sum of its proper divisors (6210968590).

12420221042 is a wasteful number, since it uses less digits than its factorization.

12420221042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286024.

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

Adding to 12420221042 its reverse (24012202421), we get a palindrome (36432423463).

The spelling of 12420221042 in words is "twelve billion, four hundred twenty million, two hundred twenty-one thousand, forty-two".