331201021222 has 4 divisors (see below), whose sum is σ = 496801531836. Its totient is φ = 165600510610.

The previous prime is 331201021171. The next prime is 331201021237. The reversal of 331201021222 is 222120102133.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 331201021222.

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, 82800255304 + ... + 82800255307.

It is an arithmetic number, because the mean of its divisors is an integer number (124200382959).

Almost surely, 2^331201021222 is an apocalyptic number.

331201021222 is a deficient number, since it is larger than the sum of its proper divisors (165600510614).

331201021222 is a wasteful number, since it uses less digits than its factorization.

331201021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165600510613.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 331201021222 its reverse (222120102133), we get a palindrome (553321123355).

The spelling of 331201021222 in words is "three hundred thirty-one billion, two hundred one million, twenty-one thousand, two hundred twenty-two".