226622240221 has 32 divisors (see below), whose sum is σ = 263360522880. Its totient is φ = 193127817216.

The previous prime is 226622240219. The next prime is 226622240227. The reversal of 226622240221 is 122042226622.

It is a cyclic number.

It is not a de Polignac number, because 226622240221 - 2¹ = 226622240219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226622240227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6070605 + ... + 6107821.

It is an arithmetic number, because the mean of its divisors is an integer number (8230016340).

Almost surely, 2^226622240221 is an apocalyptic number.

It is an amenable number.

226622240221 is a deficient number, since it is larger than the sum of its proper divisors (36738282659).

226622240221 is a wasteful number, since it uses less digits than its factorization.

226622240221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37773.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 226622240221 its reverse (122042226622), we get a palindrome (348664466843).

The spelling of 226622240221 in words is "two hundred twenty-six billion, six hundred twenty-two million, two hundred forty thousand, two hundred twenty-one".