321224214221221 has 8 divisors (see below), whose sum is σ = 351091361274624. Its totient is φ = 292576134394560.

The previous prime is 321224214221173. The next prime is 321224214221233. The reversal of 321224214221221 is 122122412422123.

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

It is a cyclic number.

It is not a de Polignac number, because 321224214221221 - 2²¹ = 321224212124069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321224214221821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304766806135 + ... + 304766807188.

It is an arithmetic number, because the mean of its divisors is an integer number (43886420159328).

Almost surely, 2^{321224214221221} is an apocalyptic number.

321224214221221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

321224214221221 is a deficient number, since it is larger than the sum of its proper divisors (29867147053403).

321224214221221 is a wasteful number, since it uses less digits than its factorization.

321224214221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609533613371.

The product of its digits is 12288, while the sum is 31.

Adding to 321224214221221 its reverse (122122412422123), we get a palindrome (443346626643344).

The spelling of 321224214221221 in words is "three hundred twenty-one trillion, two hundred twenty-four billion, two hundred fourteen million, two hundred twenty-one thousand, two hundred twenty-one".