221003113321 has 4 divisors (see below), whose sum is σ = 221006319444. Its totient is φ = 220999907200.

The previous prime is 221003113283. The next prime is 221003113349. The reversal of 221003113321 is 123311300122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 201658476096 + 19344637225 = 449064^2 + 139085^2 .

It is a cyclic number.

It is not a de Polignac number, because 221003113321 - 2²⁵ = 220969558889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221003153321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1497340 + ... + 1638301.

It is an arithmetic number, because the mean of its divisors is an integer number (55251579861).

Almost surely, 2^221003113321 is an apocalyptic number.

It is an amenable number.

221003113321 is a deficient number, since it is larger than the sum of its proper divisors (3206123).

221003113321 is an equidigital number, since it uses as much as digits as its factorization.

221003113321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206122.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221003113321 its reverse (123311300122), we get a palindrome (344314413443).

The spelling of 221003113321 in words is "two hundred twenty-one billion, three million, one hundred thirteen thousand, three hundred twenty-one".