321321220322212 has 24 divisors (see below), whose sum is σ = 619504999045632. Its totient is φ = 144609010044000.

The previous prime is 321321220322209. The next prime is 321321220322261. The reversal of 321321220322212 is 212223022123123.

It is a super-2 number, since 2×321321220322212² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

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, 36152248068 + ... + 36152256955.

It is an arithmetic number, because the mean of its divisors is an integer number (25812708293568).

Almost surely, 2^{321321220322212} is an apocalyptic number.

It is an amenable number.

321321220322212 is a deficient number, since it is larger than the sum of its proper divisors (298183778723420).

321321220322212 is a wasteful number, since it uses less digits than its factorization.

321321220322212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72304505139 (or 72304505137 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 321321220322212 its reverse (212223022123123), we get a palindrome (533544242445335).

The spelling of 321321220322212 in words is "three hundred twenty-one trillion, three hundred twenty-one billion, two hundred twenty million, three hundred twenty-two thousand, two hundred twelve".