223522121 has 8 divisors (see below), whose sum is σ = 231705600. Its totient is φ = 215399520.

The previous prime is 223522109. The next prime is 223522151. The reversal of 223522121 is 121225322.

223522121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223522121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223522093 and 223522102.

It is not an unprimeable number, because it can be changed into a prime (223522151) 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, 7676 + ... + 22493.

It is an arithmetic number, because the mean of its divisors is an integer number (28963200).

Almost surely, 2^223522121 is an apocalyptic number.

It is an amenable number.

223522121 is a deficient number, since it is larger than the sum of its proper divisors (8183479).

223522121 is a wasteful number, since it uses less digits than its factorization.

223522121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30439.

The product of its digits is 480, while the sum is 20.

The square root of 223522121 is about 14950.6562063342. The cubic root of 223522121 is about 606.8856053091.

Adding to 223522121 its reverse (121225322), we get a palindrome (344747443).

The spelling of 223522121 in words is "two hundred twenty-three million, five hundred twenty-two thousand, one hundred twenty-one".