221411226 has 16 divisors (see below), whose sum is σ = 443306304. Its totient is φ = 73723104.

The previous prime is 221411221. The next prime is 221411227. The reversal of 221411226 is 622114122.

It is not an unprimeable number, because it can be changed into a prime (221411221) 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, 14070 + ... + 25313.

It is an arithmetic number, because the mean of its divisors is an integer number (27706644).

Almost surely, 2^221411226 is an apocalyptic number.

221411226 is an abundant number, since it is smaller than the sum of its proper divisors (221895078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221411226 is a wasteful number, since it uses less digits than its factorization.

221411226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40325.

The product of its digits is 384, while the sum is 21.

The square root of 221411226 is about 14879.8933463920. The cubic root of 221411226 is about 604.9691271271.

Adding to 221411226 its reverse (622114122), we get a palindrome (843525348).

The spelling of 221411226 in words is "two hundred twenty-one million, four hundred eleven thousand, two hundred twenty-six".