222120210021 has 8 divisors (see below), whose sum is σ = 297453557280. Its totient is φ = 147433501392.

The previous prime is 222120209989. The next prime is 222120210041. The reversal of 222120210021 is 120012021222.

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

It is not a de Polignac number, because 222120210021 - 2⁵ = 222120209989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120210041) 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, 161658855 + ... + 161660228.

It is an arithmetic number, because the mean of its divisors is an integer number (37181694660).

Almost surely, 2^222120210021 is an apocalyptic number.

It is an amenable number.

222120210021 is a deficient number, since it is larger than the sum of its proper divisors (75333347259).

222120210021 is a wasteful number, since it uses less digits than its factorization.

222120210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323319315.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222120210021 its reverse (120012021222), we get a palindrome (342132231243).

The spelling of 222120210021 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred ten thousand, twenty-one".