222321121 has 16 divisors (see below), whose sum is σ = 257767488. Its totient is φ = 189504000.

The previous prime is 222321107. The next prime is 222321133. The reversal of 222321121 is 121123222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222321121 - 2¹⁷ = 222190049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222321095 and 222321104.

It is not an unprimeable number, because it can be changed into a prime (222321521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50821 + ... + 55021.

It is an arithmetic number, because the mean of its divisors is an integer number (16110468).

Almost surely, 2^222321121 is an apocalyptic number.

It is an amenable number.

222321121 is a deficient number, since it is larger than the sum of its proper divisors (35446367).

222321121 is a wasteful number, since it uses less digits than its factorization.

222321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512.

The product of its digits is 96, while the sum is 16.

The square root of 222321121 is about 14910.4366468591. The cubic root of 222321121 is about 605.7967064536.

Adding to 222321121 its reverse (121123222), we get a palindrome (343444343).

The spelling of 222321121 in words is "two hundred twenty-two million, three hundred twenty-one thousand, one hundred twenty-one".