12205442331534 has 16 divisors (see below), whose sum is σ = 24745280344272. Its totient is φ = 4012748163648.

The previous prime is 12205442331499. The next prime is 12205442331613. The reversal of 12205442331534 is 43513324450221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12205442331492 and 12205442331501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13933152909 + ... + 13933153784.

It is an arithmetic number, because the mean of its divisors is an integer number (1546580021517).

Almost surely, 2^{12205442331534} is an apocalyptic number.

12205442331534 is an abundant number, since it is smaller than the sum of its proper divisors (12539838012738).

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

12205442331534 is a wasteful number, since it uses less digits than its factorization.

12205442331534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27866306771.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 12205442331534 its reverse (43513324450221), we get a palindrome (55718766781755).

The spelling of 12205442331534 in words is "twelve trillion, two hundred five billion, four hundred forty-two million, three hundred thirty-one thousand, five hundred thirty-four".