12266466221 has 16 divisors (see below), whose sum is σ = 12612215808. Its totient is φ = 11924497200.

The previous prime is 12266466211. The next prime is 12266466269.

12266466221 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12266466221 - 2³⁰ = 11192724397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12266466211) 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, 6772406 + ... + 6774216.

It is an arithmetic number, because the mean of its divisors is an integer number (788263488).

Almost surely, 2^12266466221 is an apocalyptic number.

It is an amenable number.

12266466221 is a deficient number, since it is larger than the sum of its proper divisors (345749587).

12266466221 is a wasteful number, since it uses less digits than its factorization.

12266466221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752.

The product of its digits is 82944, while the sum is 38.

The spelling of 12266466221 in words is "twelve billion, two hundred sixty-six million, four hundred sixty-six thousand, two hundred twenty-one".