321332220212 has 12 divisors (see below), whose sum is σ = 562415626080. Its totient is φ = 160642041336.

The previous prime is 321332220199. The next prime is 321332220227. The reversal of 321332220212 is 212022233123.

It is a super-2 number, since 2×321332220212² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5987138 + ... + 6040569.

It is an arithmetic number, because the mean of its divisors is an integer number (46867968840).

Almost surely, 2^321332220212 is an apocalyptic number.

It is an amenable number.

321332220212 is a deficient number, since it is larger than the sum of its proper divisors (241083405868).

321332220212 is a wasteful number, since it uses less digits than its factorization.

321332220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12034390 (or 12034388 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 321332220212 its reverse (212022233123), we get a palindrome (533354453335).

The spelling of 321332220212 in words is "three hundred twenty-one billion, three hundred thirty-two million, two hundred twenty thousand, two hundred twelve".