223352231221 has 4 divisors (see below), whose sum is σ = 255259692832. Its totient is φ = 191444769612.

The previous prime is 223352231203. The next prime is 223352231227. The reversal of 223352231221 is 122132253322.

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 not a de Polignac number, because 223352231221 - 2⁵ = 223352231189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223352231221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223352231227) 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, 15953730795 + ... + 15953730808.

It is an arithmetic number, because the mean of its divisors is an integer number (63814923208).

Almost surely, 2^223352231221 is an apocalyptic number.

It is an amenable number.

223352231221 is a deficient number, since it is larger than the sum of its proper divisors (31907461611).

223352231221 is an equidigital number, since it uses as much as digits as its factorization.

223352231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31907461610.

The product of its digits is 8640, while the sum is 28.

Adding to 223352231221 its reverse (122132253322), we get a palindrome (345484484543).

The spelling of 223352231221 in words is "two hundred twenty-three billion, three hundred fifty-two million, two hundred thirty-one thousand, two hundred twenty-one".