12201024042 has 12 divisors (see below), whose sum is σ = 26435552130. Its totient is φ = 4067008008.

The previous prime is 12201024023. The next prime is 12201024047. The reversal of 12201024042 is 24042010221.

It can be written as a sum of positive squares in only one way, i.e., 8253540801 + 3947483241 = 90849^2 + 62829^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 677834669 = 12201024042 / (1 + 2 + 2 + 0 + 1 + 0 + 2 + 4 + 0 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (12201024047) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 338917317 + ... + 338917352.

Almost surely, 2^12201024042 is an apocalyptic number.

12201024042 is an abundant number, since it is smaller than the sum of its proper divisors (14234528088).

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

12201024042 is a wasteful number, since it uses less digits than its factorization.

12201024042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677834677 (or 677834674 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12201024042 its reverse (24042010221), we get a palindrome (36243034263).

The spelling of 12201024042 in words is "twelve billion, two hundred one million, twenty-four thousand, forty-two".