323212112223221 has 16 divisors (see below), whose sum is σ = 361164467328000. Its totient is φ = 287229473141760.

The previous prime is 323212112223109. The next prime is 323212112223307. The reversal of 323212112223221 is 122322211212323.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323212112223221 is a prime.

It is a super-2 number, since 2×323212112223221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323212112222221) 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, 2077681721 + ... + 2077837278.

It is an arithmetic number, because the mean of its divisors is an integer number (22572779208000).

Almost surely, 2^{323212112223221} is an apocalyptic number.

323212112223221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

323212112223221 is a deficient number, since it is larger than the sum of its proper divisors (37952355104779).

323212112223221 is a wasteful number, since it uses less digits than its factorization.

323212112223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155519236.

The product of its digits is 6912, while the sum is 29.

Adding to 323212112223221 its reverse (122322211212323), we get a palindrome (445534323435544).

The spelling of 323212112223221 in words is "three hundred twenty-three trillion, two hundred twelve billion, one hundred twelve million, two hundred twenty-three thousand, two hundred twenty-one".