12231244213221 has 32 divisors (see below), whose sum is σ = 17802830186496. Its totient is φ = 7407906408000.

The previous prime is 12231244213141. The next prime is 12231244213277.

12231244213221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12231244213221 - 2¹⁴ = 12231244196837 is a prime.

It is a super-2 number, since 2×12231244213221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231244214221) 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, 325358136 + ... + 325395726.

It is an arithmetic number, because the mean of its divisors is an integer number (556338443328).

Almost surely, 2^{12231244213221} is an apocalyptic number.

12231244213221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12231244213221 is a deficient number, since it is larger than the sum of its proper divisors (5571585973275).

12231244213221 is a wasteful number, since it uses less digits than its factorization.

12231244213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43953.

The product of its digits is 9216, while the sum is 30.

It can be divided in two parts, 1223124 and 4213221, that added together give a palindrome (5436345).

The spelling of 12231244213221 in words is "twelve trillion, two hundred thirty-one billion, two hundred forty-four million, two hundred thirteen thousand, two hundred twenty-one".