12243633634221 has 32 divisors (see below), whose sum is σ = 18441210453120. Its totient is φ = 7157435577600.

The previous prime is 12243633634181. The next prime is 12243633634303.

12243633634221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12243633634221 - 2²³ = 12243625245613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243633635221) 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, 5345350 + ... + 7284231.

It is an arithmetic number, because the mean of its divisors is an integer number (576287826660).

Almost surely, 2^{12243633634221} is an apocalyptic number.

12243633634221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12243633634221 is a deficient number, since it is larger than the sum of its proper divisors (6197576818899).

12243633634221 is a wasteful number, since it uses less digits than its factorization.

12243633634221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12630637.

The product of its digits is 746496, while the sum is 42.

It can be divided in two parts, 1224363 and 3634221, that added together give a palindrome (4858584).

The spelling of 12243633634221 in words is "twelve trillion, two hundred forty-three billion, six hundred thirty-three million, six hundred thirty-four thousand, two hundred twenty-one".