222345121 has 4 divisors (see below), whose sum is σ = 224042544. Its totient is φ = 220647700.

The previous prime is 222345119. The next prime is 222345133. The reversal of 222345121 is 121543222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222345121 - 2¹ = 222345119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222345092 and 222345101.

It is not an unprimeable number, because it can be changed into a prime (222345181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848515 + ... + 848776.

It is an arithmetic number, because the mean of its divisors is an integer number (56010636).

Almost surely, 2^222345121 is an apocalyptic number.

It is an amenable number.

222345121 is a deficient number, since it is larger than the sum of its proper divisors (1697423).

222345121 is a wasteful number, since it uses less digits than its factorization.

222345121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697422.

The product of its digits is 960, while the sum is 22.

The square root of 222345121 is about 14911.2414305449. The cubic root of 222345121 is about 605.8185046492.

Adding to 222345121 its reverse (121543222), we get a palindrome (343888343).

The spelling of 222345121 in words is "two hundred twenty-two million, three hundred forty-five thousand, one hundred twenty-one".