221222122102220 has 24 divisors (see below), whose sum is σ = 464650907919408. Its totient is φ = 88472762840000.

The previous prime is 221222122102169. The next prime is 221222122102253. The reversal of 221222122102220 is 22201221222122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005262286 + ... + 1005482325.

It is an arithmetic number, because the mean of its divisors is an integer number (19360454496642).

Almost surely, 2^{221222122102220} is an apocalyptic number.

221222122102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222122102220 is an abundant number, since it is smaller than the sum of its proper divisors (243428785817188).

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

221222122102220 is a wasteful number, since it uses less digits than its factorization.

221222122102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010750121 (or 2010750119 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 221222122102220 its reverse (22201221222122), we get a palindrome (243423343324342).

The spelling of 221222122102220 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred two thousand, two hundred twenty".