232220123221 has 4 divisors (see below), whose sum is σ = 232581274912. Its totient is φ = 231858971532.

The previous prime is 232220123143. The next prime is 232220123237. The reversal of 232220123221 is 122321022232.

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 232220123221 - 2⁹ = 232220122709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232220123192 and 232220123201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232220123251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180574881 + ... + 180576166.

It is an arithmetic number, because the mean of its divisors is an integer number (58145318728).

Almost surely, 2^232220123221 is an apocalyptic number.

It is an amenable number.

232220123221 is a deficient number, since it is larger than the sum of its proper divisors (361151691).

232220123221 is an equidigital number, since it uses as much as digits as its factorization.

232220123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361151690.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 232220123221 its reverse (122321022232), we get a palindrome (354541145453).

The spelling of 232220123221 in words is "two hundred thirty-two billion, two hundred twenty million, one hundred twenty-three thousand, two hundred twenty-one".