221233101321 has 16 divisors (see below), whose sum is σ = 295766979200. Its totient is φ = 147094247808.

The previous prime is 221233101319. The next prime is 221233101373. The reversal of 221233101321 is 123101332122.

It is not a de Polignac number, because 221233101321 - 2¹ = 221233101319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221233101521) 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, 3414495 + ... + 3478683.

It is an arithmetic number, because the mean of its divisors is an integer number (18485436200).

Almost surely, 2^221233101321 is an apocalyptic number.

It is an amenable number.

221233101321 is a deficient number, since it is larger than the sum of its proper divisors (74533877879).

221233101321 is a wasteful number, since it uses less digits than its factorization.

221233101321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67248.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221233101321 its reverse (123101332122), we get a palindrome (344334433443).

The spelling of 221233101321 in words is "two hundred twenty-one billion, two hundred thirty-three million, one hundred one thousand, three hundred twenty-one".