323212111221 has 16 divisors (see below), whose sum is σ = 432250380288. Its totient is φ = 214824990000.

The previous prime is 323212111217. The next prime is 323212111223. The reversal of 323212111221 is 122111212323.

It is not a de Polignac number, because 323212111221 - 2² = 323212111217 is a prime.

It is a super-2 number, since 2×323212111221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323212111223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1784596 + ... + 1957346.

It is an arithmetic number, because the mean of its divisors is an integer number (27015648768).

Almost surely, 2^323212111221 is an apocalyptic number.

It is an amenable number.

323212111221 is a deficient number, since it is larger than the sum of its proper divisors (109038269067).

323212111221 is a wasteful number, since it uses less digits than its factorization.

323212111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174632.

The product of its digits is 288, while the sum is 21.

Adding to 323212111221 its reverse (122111212323), we get a palindrome (445323323544).

The spelling of 323212111221 in words is "three hundred twenty-three billion, two hundred twelve million, one hundred eleven thousand, two hundred twenty-one".