12212444120042 has 8 divisors (see below), whose sum is σ = 18319595696100. Its totient is φ = 6105912221344.

The previous prime is 12212444119963. The next prime is 12212444120047. The reversal of 12212444120042 is 24002144421221.

It can be written as a sum of positive squares in 2 ways, for example, as 12196291997761 + 16152122281 = 3492319^2 + 127091^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12212444119987 and 12212444120014.

It is not an unprimeable number, because it can be changed into a prime (12212444120047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154870067 + ... + 154948902.

Almost surely, 2^{12212444120042} is an apocalyptic number.

12212444120042 is a deficient number, since it is larger than the sum of its proper divisors (6107151576058).

12212444120042 is a wasteful number, since it uses less digits than its factorization.

12212444120042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309838680.

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 12212444120042 its reverse (24002144421221), we get a palindrome (36214588541263).

The spelling of 12212444120042 in words is "twelve trillion, two hundred twelve billion, four hundred forty-four million, one hundred twenty thousand, forty-two".