313221021222 has 32 divisors (see below), whose sum is σ = 648284212224. Its totient is φ = 100809727200.

The previous prime is 313221021203. The next prime is 313221021227. The reversal of 313221021222 is 222120122313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313221021227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5356054 + ... + 5414217.

It is an arithmetic number, because the mean of its divisors is an integer number (20258881632).

Almost surely, 2^313221021222 is an apocalyptic number.

313221021222 is an abundant number, since it is smaller than the sum of its proper divisors (335063191002).

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

313221021222 is a wasteful number, since it uses less digits than its factorization.

313221021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10770444.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 313221021222 its reverse (222120122313), we get a palindrome (535341143535).

The spelling of 313221021222 in words is "three hundred thirteen billion, two hundred twenty-one million, twenty-one thousand, two hundred twenty-two".