226650566421 has 20 divisors (see below), whose sum is σ = 338896011564. Its totient is φ = 150957907200.

The previous prime is 226650566411. The next prime is 226650566423. The reversal of 226650566421 is 124665056622.

226650566421 is a `hidden beast` number, since 2 + 2 + 6 + 65 + 0 + 566 + 4 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 184136250321 + 42514316100 = 429111^2 + 206190^2 .

It is not a de Polignac number, because 226650566421 - 2⁷ = 226650566293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226650566423) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1232700 + ... + 1404581.

Almost surely, 2^226650566421 is an apocalyptic number.

It is an amenable number.

226650566421 is a deficient number, since it is larger than the sum of its proper divisors (112245445143).

226650566421 is a wasteful number, since it uses less digits than its factorization.

226650566421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638354 (or 2638345 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 226650566421 in words is "two hundred twenty-six billion, six hundred fifty million, five hundred sixty-six thousand, four hundred twenty-one".