222332121 has 24 divisors (see below), whose sum is σ = 363321504. Its totient is φ = 134745120.

The previous prime is 222332113. The next prime is 222332179. The reversal of 222332121 is 121233222.

It is not a de Polignac number, because 222332121 - 2³ = 222332113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222332094 and 222332103.

It is not an unprimeable number, because it can be changed into a prime (222332221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38916 + ... + 44261.

It is an arithmetic number, because the mean of its divisors is an integer number (15138396).

Almost surely, 2^222332121 is an apocalyptic number.

It is an amenable number.

222332121 is a deficient number, since it is larger than the sum of its proper divisors (140989383).

222332121 is an equidigital number, since it uses as much as digits as its factorization.

222332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83203 (or 83191 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 222332121 is about 14910.8055114404. The cubic root of 222332121 is about 605.8066974880.

Adding to 222332121 its reverse (121233222), we get a palindrome (343565343).

The spelling of 222332121 in words is "two hundred twenty-two million, three hundred thirty-two thousand, one hundred twenty-one".