223445121 has 8 divisors (see below), whose sum is σ = 305193504. Its totient is φ = 145330080.

The previous prime is 223445113. The next prime is 223445143. The reversal of 223445121 is 121544322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223445121 - 2³ = 223445113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223445091 and 223445100.

It is not an unprimeable number, because it can be changed into a prime (223445221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908191 + ... + 908436.

It is an arithmetic number, because the mean of its divisors is an integer number (38149188).

Almost surely, 2^223445121 is an apocalyptic number.

It is an amenable number.

223445121 is a deficient number, since it is larger than the sum of its proper divisors (81748383).

223445121 is a wasteful number, since it uses less digits than its factorization.

223445121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816671.

The product of its digits is 1920, while the sum is 24.

The square root of 223445121 is about 14948.0808467174. The cubic root of 223445121 is about 606.8159096591.

Adding to 223445121 its reverse (121544322), we get a palindrome (344989443).

The spelling of 223445121 in words is "two hundred twenty-three million, four hundred forty-five thousand, one hundred twenty-one".