226242621 has 12 divisors (see below), whose sum is σ = 356503680. Its totient is φ = 137116680.

The previous prime is 226242617. The next prime is 226242623. The reversal of 226242621 is 126242622.

It is a happy number.

It is not a de Polignac number, because 226242621 - 2² = 226242617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226242623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1142541 + ... + 1142738.

It is an arithmetic number, because the mean of its divisors is an integer number (29708640).

Almost surely, 2^226242621 is an apocalyptic number.

It is an amenable number.

226242621 is a deficient number, since it is larger than the sum of its proper divisors (130261059).

226242621 is a wasteful number, since it uses less digits than its factorization.

226242621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285296 (or 2285293 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 226242621 is about 15041.3636682317. The cubic root of 226242621 is about 609.3378293382.

Subtracting from 226242621 its reverse (126242622), we obtain a palindrome (99999999).

The spelling of 226242621 in words is "two hundred twenty-six million, two hundred forty-two thousand, six hundred twenty-one".