223130320221 has 4 divisors (see below), whose sum is σ = 297507093632. Its totient is φ = 148753546812.

The previous prime is 223130320219. The next prime is 223130320247. The reversal of 223130320221 is 122023031322.

It is a happy number.

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 not a de Polignac number, because 223130320221 - 2¹ = 223130320219 is a prime.

It is a super-3 number, since 3×223130320221³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223130320261) 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, 37188386701 + ... + 37188386706.

It is an arithmetic number, because the mean of its divisors is an integer number (74376773408).

Almost surely, 2^223130320221 is an apocalyptic number.

It is an amenable number.

223130320221 is a deficient number, since it is larger than the sum of its proper divisors (74376773411).

223130320221 is an equidigital number, since it uses as much as digits as its factorization.

223130320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74376773410.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 223130320221 its reverse (122023031322), we get a palindrome (345153351543).

The spelling of 223130320221 in words is "two hundred twenty-three billion, one hundred thirty million, three hundred twenty thousand, two hundred twenty-one".