221213231322 has 16 divisors (see below), whose sum is σ = 444649713600. Its totient is φ = 73367201952.

The previous prime is 221213231269. The next prime is 221213231333. The reversal of 221213231322 is 223132312122.

221213231322 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 221213231292 and 221213231301.

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, 92634163 + ... + 92636550.

It is an arithmetic number, because the mean of its divisors is an integer number (27790607100).

Almost surely, 2^221213231322 is an apocalyptic number.

221213231322 is an abundant number, since it is smaller than the sum of its proper divisors (223436482278).

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

221213231322 is a wasteful number, since it uses less digits than its factorization.

221213231322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185270917.

The product of its digits is 1728, while the sum is 24.

Adding to 221213231322 its reverse (223132312122), we get a palindrome (444345543444).

The spelling of 221213231322 in words is "two hundred twenty-one billion, two hundred thirteen million, two hundred thirty-one thousand, three hundred twenty-two".