223521226 has 4 divisors (see below), whose sum is σ = 335281842. Its totient is φ = 111760612.

The previous prime is 223521211. The next prime is 223521281. The reversal of 223521226 is 622125322.

It is a happy number.

223521226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 217592001 + 5929225 = 14751^2 + 2435^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 223521226.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55880305 + ... + 55880308.

Almost surely, 2^223521226 is an apocalyptic number.

223521226 is a deficient number, since it is larger than the sum of its proper divisors (111760616).

223521226 is a wasteful number, since it uses less digits than its factorization.

223521226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111760615.

The product of its digits is 2880, while the sum is 25.

The square root of 223521226 is about 14950.6262745077. The cubic root of 223521226 is about 606.8847953023.

Adding to 223521226 its reverse (622125322), we get a palindrome (845646548).

The spelling of 223521226 in words is "two hundred twenty-three million, five hundred twenty-one thousand, two hundred twenty-six".