2226666221 has 16 divisors (see below), whose sum is σ = 2558754240. Its totient is φ = 1920516480.

The previous prime is 2226666209. The next prime is 2226666223. The reversal of 2226666221 is 1226666222.

2226666221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2226666221 - 2³⁰ = 1152924397 is a prime.

It is a super-3 number, since 3×2226666221³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2226666223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43715 + ... + 79776.

It is an arithmetic number, because the mean of its divisors is an integer number (159922140).

Almost surely, 2^2226666221 is an apocalyptic number.

It is an amenable number.

2226666221 is a deficient number, since it is larger than the sum of its proper divisors (332088019).

2226666221 is a wasteful number, since it uses less digits than its factorization.

2226666221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123596.

The product of its digits is 41472, while the sum is 35.

The square root of 2226666221 is about 47187.5642622079. The cubic root of 2226666221 is about 1305.8251845195.

Subtracting from 2226666221 its reverse (1226666222), we obtain a palindrome (999999999).

The spelling of 2226666221 in words is "two billion, two hundred twenty-six million, six hundred sixty-six thousand, two hundred twenty-one".