221320131322 has 8 divisors (see below), whose sum is σ = 333153272736. Its totient is φ = 110269040412.

The previous prime is 221320131311. The next prime is 221320131349. The reversal of 221320131322 is 223131023122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221320131293 and 221320131302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195511918 + ... + 195513049.

It is an arithmetic number, because the mean of its divisors is an integer number (41644159092).

Almost surely, 2^221320131322 is an apocalyptic number.

221320131322 is a deficient number, since it is larger than the sum of its proper divisors (111833141414).

221320131322 is a wasteful number, since it uses less digits than its factorization.

221320131322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391025252.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221320131322 its reverse (223131023122), we get a palindrome (444451154444).

The spelling of 221320131322 in words is "two hundred twenty-one billion, three hundred twenty million, one hundred thirty-one thousand, three hundred twenty-two".