321230312211221 has 32 divisors (see below), whose sum is σ = 377246523064320. Its totient is φ = 267753721435200.

The previous prime is 321230312211209. The next prime is 321230312211223. The reversal of 321230312211221 is 122112213032123.

It is not a de Polignac number, because 321230312211221 - 2⁴² = 316832265700117 is a prime.

321230312211221 is a modest number, since divided by 12211221 gives 3212303 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321230312211223) 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 31 ways as a sum of consecutive naturals, for example, 6894662636 + ... + 6894709226.

It is an arithmetic number, because the mean of its divisors is an integer number (11788953845760).

Almost surely, 2^{321230312211221} is an apocalyptic number.

It is an amenable number.

321230312211221 is a deficient number, since it is larger than the sum of its proper divisors (56016210853099).

321230312211221 is a wasteful number, since it uses less digits than its factorization.

321230312211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60465.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 321230312211221 its reverse (122112213032123), we get a palindrome (443342525243344).

The spelling of 321230312211221 in words is "three hundred twenty-one trillion, two hundred thirty billion, three hundred twelve million, two hundred eleven thousand, two hundred twenty-one".