222044121 has 48 divisors (see below), whose sum is σ = 356428800. Its totient is φ = 132347520.

The previous prime is 222044111. The next prime is 222044143. The reversal of 222044121 is 121440222.

222044121 is a `hidden beast` number, since 2 + 220 + 441 + 2 + 1 = 666.

It is not a de Polignac number, because 222044121 - 2⁶ = 222044057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222044094 and 222044103.

It is not an unprimeable number, because it can be changed into a prime (222044101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 819216 + ... + 819486.

It is an arithmetic number, because the mean of its divisors is an integer number (7425600).

Almost surely, 2^222044121 is an apocalyptic number.

It is an amenable number.

222044121 is a deficient number, since it is larger than the sum of its proper divisors (134384679).

222044121 is a wasteful number, since it uses less digits than its factorization.

222044121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 222044121 is about 14901.1449560093. The cubic root of 222044121 is about 605.5450053295.

Adding to 222044121 its reverse (121440222), we get a palindrome (343484343).

The spelling of 222044121 in words is "two hundred twenty-two million, forty-four thousand, one hundred twenty-one".