12214841221 has 16 divisors (see below), whose sum is σ = 13636035648. Its totient is φ = 10938583920.

The previous prime is 12214841183. The next prime is 12214841227.

12214841221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12214841221 - 2¹¹ = 12214839173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12214841221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12214841227) 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, 20691 + ... + 157663.

It is an arithmetic number, because the mean of its divisors is an integer number (852252228).

Almost surely, 2^12214841221 is an apocalyptic number.

12214841221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12214841221 is a deficient number, since it is larger than the sum of its proper divisors (1421194427).

12214841221 is an equidigital number, since it uses as much as digits as its factorization.

12214841221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137073 (or 137051 counting only the distinct ones).

The product of its digits is 2048, while the sum is 28.

The spelling of 12214841221 in words is "twelve billion, two hundred fourteen million, eight hundred forty-one thousand, two hundred twenty-one".