222121132321 has 8 divisors (see below), whose sum is σ = 242356224384. Its totient is φ = 201893083920.

The previous prime is 222121132319. The next prime is 222121132349. The reversal of 222121132321 is 123231121222.

222121132321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222121132321 - 2¹ = 222121132319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222121132292 and 222121132301.

It is not an unprimeable number, because it can be changed into a prime (222121132361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694866 + ... + 1821211.

It is an arithmetic number, because the mean of its divisors is an integer number (30294528048).

Almost surely, 2^222121132321 is an apocalyptic number.

It is an amenable number.

222121132321 is a deficient number, since it is larger than the sum of its proper divisors (20235092063).

222121132321 is a wasteful number, since it uses less digits than its factorization.

222121132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521831.

The product of its digits is 576, while the sum is 22.

Adding to 222121132321 its reverse (123231121222), we get a palindrome (345352253543).

The spelling of 222121132321 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred thirty-two thousand, three hundred twenty-one".