222120123221 has 8 divisors (see below), whose sum is σ = 228377321088. Its totient is φ = 215902908000.

The previous prime is 222120123167. The next prime is 222120123227. The reversal of 222120123221 is 122321021222.

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-222120123221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222120123193 and 222120123202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120123227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9984395 + ... + 10006616.

It is an arithmetic number, because the mean of its divisors is an integer number (28547165136).

Almost surely, 2^222120123221 is an apocalyptic number.

It is an amenable number.

222120123221 is a deficient number, since it is larger than the sum of its proper divisors (6257197867).

222120123221 is a wasteful number, since it uses less digits than its factorization.

222120123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19991323.

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

Adding to 222120123221 its reverse (122321021222), we get a palindrome (344441144443).

It can be divided in two parts, 2221201 and 23221, that added together give a palindrome (2244422).

The spelling of 222120123221 in words is "two hundred twenty-two billion, one hundred twenty million, one hundred twenty-three thousand, two hundred twenty-one".