12021513331442 has 8 divisors (see below), whose sum is σ = 19092991761756. Its totient is φ = 5657182744192.

The previous prime is 12021513331441. The next prime is 12021513331453. The reversal of 12021513331442 is 24413331512021.

It is a happy number.

12021513331442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9662343281761 + 2359170049681 = 3108431^2 + 1535959^2 .

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 = 12021513331399 and 12021513331408.

It is not an unprimeable number, because it can be changed into a prime (12021513331441) 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, 176786960723 + ... + 176786960790.

Almost surely, 2^{12021513331442} is an apocalyptic number.

12021513331442 is a deficient number, since it is larger than the sum of its proper divisors (7071478430314).

12021513331442 is a wasteful number, since it uses less digits than its factorization.

12021513331442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353573921532.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 12021513331442 its reverse (24413331512021), we get a palindrome (36434844843463).

The spelling of 12021513331442 in words is "twelve trillion, twenty-one billion, five hundred thirteen million, three hundred thirty-one thousand, four hundred forty-two".