221321131322 has 16 divisors (see below), whose sum is σ = 339744268512. Its totient is φ = 108073679280.

The previous prime is 221321131307. The next prime is 221321131333. The reversal of 221321131322 is 223131123122.

221321131322 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 557828 + ... + 868224.

It is an arithmetic number, because the mean of its divisors is an integer number (21234016782).

Almost surely, 2^221321131322 is an apocalyptic number.

221321131322 is a deficient number, since it is larger than the sum of its proper divisors (118423137190).

221321131322 is a wasteful number, since it uses less digits than its factorization.

221321131322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318733.

The product of its digits is 864, while the sum is 23.

Adding to 221321131322 its reverse (223131123122), we get a palindrome (444452254444).

The spelling of 221321131322 in words is "two hundred twenty-one billion, three hundred twenty-one million, one hundred thirty-one thousand, three hundred twenty-two".