221201322 has 16 divisors (see below), whose sum is σ = 446964672. Its totient is φ = 72973440.

The previous prime is 221201261. The next prime is 221201329. The reversal of 221201322 is 223102122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221201329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189454 + ... + 190617.

It is an arithmetic number, because the mean of its divisors is an integer number (27935292).

Almost surely, 2^221201322 is an apocalyptic number.

221201322 is an abundant number, since it is smaller than the sum of its proper divisors (225763350).

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

221201322 is a wasteful number, since it uses less digits than its factorization.

221201322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380173.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221201322 is about 14872.8383975622. The cubic root of 221201322 is about 604.7778908294. Note that the first 3 decimals are identical.

Adding to 221201322 its reverse (223102122), we get a palindrome (444303444).

The spelling of 221201322 in words is "two hundred twenty-one million, two hundred one thousand, three hundred twenty-two".