320221143221212 has 6 divisors (see below), whose sum is σ = 560387000637128. Its totient is φ = 160110571610604.

The previous prime is 320221143221051. The next prime is 320221143221219. The reversal of 320221143221212 is 212122341122023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320221143221219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40027642902648 + ... + 40027642902655.

Almost surely, 2^{320221143221212} is an apocalyptic number.

It is an amenable number.

320221143221212 is a deficient number, since it is larger than the sum of its proper divisors (240165857415916).

320221143221212 is a wasteful number, since it uses less digits than its factorization.

320221143221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80055285805307 (or 80055285805305 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 320221143221212 its reverse (212122341122023), we get a palindrome (532343484343235).

The spelling of 320221143221212 in words is "three hundred twenty trillion, two hundred twenty-one billion, one hundred forty-three million, two hundred twenty-one thousand, two hundred twelve".