12421222042 has 16 divisors (see below), whose sum is σ = 19247768064. Its totient is φ = 6005610000.

The previous prime is 12421222031. The next prime is 12421222049. The reversal of 12421222042 is 24022212421.

It is not an unprimeable number, because it can be changed into a prime (12421222049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3667 + ... + 157657.

It is an arithmetic number, because the mean of its divisors is an integer number (1202985504).

Almost surely, 2^12421222042 is an apocalyptic number.

12421222042 is a deficient number, since it is larger than the sum of its proper divisors (6826546022).

12421222042 is a wasteful number, since it uses less digits than its factorization.

12421222042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155325.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 12421222042 its reverse (24022212421), we get a palindrome (36443434463).

The spelling of 12421222042 in words is "twelve billion, four hundred twenty-one million, two hundred twenty-two thousand, forty-two".