221331302233 has 4 divisors (see below), whose sum is σ = 232980318160. Its totient is φ = 209682286308.

The previous prime is 221331302207. The next prime is 221331302251. The reversal of 221331302233 is 332203133122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221331302233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221331302198 and 221331302207.

It is not an unprimeable number, because it can be changed into a prime (221331302833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5824507935 + ... + 5824507972.

It is an arithmetic number, because the mean of its divisors is an integer number (58245079540).

Almost surely, 2^221331302233 is an apocalyptic number.

It is an amenable number.

221331302233 is a deficient number, since it is larger than the sum of its proper divisors (11649015927).

221331302233 is a wasteful number, since it uses less digits than its factorization.

221331302233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11649015926.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 221331302233 its reverse (332203133122), we get a palindrome (553534435355).

The spelling of 221331302233 in words is "two hundred twenty-one billion, three hundred thirty-one million, three hundred two thousand, two hundred thirty-three".