321512122342 has 4 divisors (see below), whose sum is σ = 482268183516. Its totient is φ = 160756061170.

The previous prime is 321512122333. The next prime is 321512122357. The reversal of 321512122342 is 243221215123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243221215123 = 51853 ⋅4690591.

It is a self number, because there is not a number n which added to its sum of digits gives 321512122342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80378030584 + ... + 80378030587.

It is an arithmetic number, because the mean of its divisors is an integer number (120567045879).

Almost surely, 2^321512122342 is an apocalyptic number.

321512122342 is a deficient number, since it is larger than the sum of its proper divisors (160756061174).

321512122342 is a wasteful number, since it uses less digits than its factorization.

321512122342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160756061173.

The product of its digits is 5760, while the sum is 28.

Adding to 321512122342 its reverse (243221215123), we get a palindrome (564733337465).

The spelling of 321512122342 in words is "three hundred twenty-one billion, five hundred twelve million, one hundred twenty-two thousand, three hundred forty-two".