221304312033 has 8 divisors (see below), whose sum is σ = 337225618368. Its totient is φ = 126459606864.

The previous prime is 221304312023. The next prime is 221304312083. The reversal of 221304312033 is 330213403122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221304312033 - 2¹⁰ = 221304311009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221304311994 and 221304312012.

It is not an unprimeable number, because it can be changed into a prime (221304312023) 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, 5269150266 + ... + 5269150307.

It is an arithmetic number, because the mean of its divisors is an integer number (42153202296).

Almost surely, 2^221304312033 is an apocalyptic number.

It is an amenable number.

221304312033 is a deficient number, since it is larger than the sum of its proper divisors (115921306335).

221304312033 is a wasteful number, since it uses less digits than its factorization.

221304312033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10538300583.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 221304312033 its reverse (330213403122), we get a palindrome (551517715155).

The spelling of 221304312033 in words is "two hundred twenty-one billion, three hundred four million, three hundred twelve thousand, thirty-three".