221000222210120 has 32 divisors (see below), whose sum is σ = 503241469859520. Its totient is φ = 87335027570880.

The previous prime is 221000222210113. The next prime is 221000222210231. The reversal of 221000222210120 is 21012222000122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33283162676 + ... + 33283169315.

It is an arithmetic number, because the mean of its divisors is an integer number (15726295933110).

Almost surely, 2^{221000222210120} is an apocalyptic number.

221000222210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221000222210120 is an abundant number, since it is smaller than the sum of its proper divisors (282241247649400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221000222210120 is a wasteful number, since it uses less digits than its factorization.

221000222210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66566332085 (or 66566332081 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221000222210120 its reverse (21012222000122), we get a palindrome (242012444210242).

The spelling of 221000222210120 in words is "two hundred twenty-one trillion, two hundred twenty-two million, two hundred ten thousand, one hundred twenty".