321230222221 has 4 divisors (see below), whose sum is σ = 321777463392. Its totient is φ = 320682981052.

The previous prime is 321230222141. The next prime is 321230222249. The reversal of 321230222221 is 122222032123.

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 321230222221 - 2⁹ = 321230221709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321230222192 and 321230222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321230226221) 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, 273619705 + ... + 273620878.

It is an arithmetic number, because the mean of its divisors is an integer number (80444365848).

Almost surely, 2^321230222221 is an apocalyptic number.

It is an amenable number.

321230222221 is a deficient number, since it is larger than the sum of its proper divisors (547241171).

321230222221 is an equidigital number, since it uses as much as digits as its factorization.

321230222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547241170.

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

Adding to 321230222221 its reverse (122222032123), we get a palindrome (443452254344).

The spelling of 321230222221 in words is "three hundred twenty-one billion, two hundred thirty million, two hundred twenty-two thousand, two hundred twenty-one".