222123120221 has 8 divisors (see below), whose sum is σ = 225285091200. Its totient is φ = 218962079280.

The previous prime is 222123120209. The next prime is 222123120223. The reversal of 222123120221 is 122021321222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222123120221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222123120193 and 222123120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222123120223) by changing a digit.

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, 255800 + ... + 713918.

It is an arithmetic number, because the mean of its divisors is an integer number (28160636400).

Almost surely, 2^222123120221 is an apocalyptic number.

It is an amenable number.

222123120221 is a deficient number, since it is larger than the sum of its proper divisors (3161970979).

222123120221 is an equidigital number, since it uses as much as digits as its factorization.

222123120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465019.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 222123120221 its reverse (122021321222), we get a palindrome (344144441443).

The spelling of 222123120221 in words is "two hundred twenty-two billion, one hundred twenty-three million, one hundred twenty thousand, two hundred twenty-one".