12201122442 has 32 divisors (see below), whose sum is σ = 25068578112. Its totient is φ = 3956045184.

The previous prime is 12201122413. The next prime is 12201122459. The reversal of 12201122442 is 24422110221.

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 in 15 ways as a sum of consecutive naturals, for example, 1450573 + ... + 1458959.

It is an arithmetic number, because the mean of its divisors is an integer number (783393066).

Almost surely, 2^12201122442 is an apocalyptic number.

12201122442 is an abundant number, since it is smaller than the sum of its proper divisors (12867455670).

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

12201122442 is a wasteful number, since it uses less digits than its factorization.

12201122442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14982.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12201122442 its reverse (24422110221), we get a palindrome (36623232663).

It can be divided in two parts, 122011 and 22442, that added together give a triangular number (144453 = T₅₃₇).

The spelling of 12201122442 in words is "twelve billion, two hundred one million, one hundred twenty-two thousand, four hundred forty-two".