222000122221 has 16 divisors (see below), whose sum is σ = 246081686400. Its totient is φ = 199326080448.

The previous prime is 222000122219. The next prime is 222000122243. The reversal of 222000122221 is 122221000222.

222000122221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 222000122221 - 2¹ = 222000122219 is a prime.

It is a super-2 number, since 2×222000122221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222000122195 and 222000122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222000122251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2282686 + ... + 2377951.

It is an arithmetic number, because the mean of its divisors is an integer number (15380105400).

Almost surely, 2^222000122221 is an apocalyptic number.

It is an amenable number.

222000122221 is a deficient number, since it is larger than the sum of its proper divisors (24081564179).

222000122221 is a wasteful number, since it uses less digits than its factorization.

222000122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4660788.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222000122221 its reverse (122221000222), we get a palindrome (344221122443).

The spelling of 222000122221 in words is "two hundred twenty-two billion, one hundred twenty-two thousand, two hundred twenty-one".