201223226 has 4 divisors (see below), whose sum is σ = 301834842. Its totient is φ = 100611612.

The previous prime is 201223219. The next prime is 201223241. The reversal of 201223226 is 622322102.

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., 123765625 + 77457601 = 11125^2 + 8801^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201223198 and 201223207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50305805 + ... + 50305808.

Almost surely, 2^201223226 is an apocalyptic number.

201223226 is a deficient number, since it is larger than the sum of its proper divisors (100611616).

201223226 is a wasteful number, since it uses less digits than its factorization.

201223226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100611615.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 201223226 is about 14185.3172682179. The cubic root of 201223226 is about 585.9933700671.

Adding to 201223226 its reverse (622322102), we get a palindrome (823545328).

The spelling of 201223226 in words is "two hundred one million, two hundred twenty-three thousand, two hundred twenty-six".