12201223211421 has 8 divisors (see below), whose sum is σ = 16277330547264. Its totient is φ = 8129632341600.

The previous prime is 12201223211413. The next prime is 12201223211423. The reversal of 12201223211421 is 12411232210221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12201223211421 - 2³ = 12201223211413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201223211391 and 12201223211400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201223211423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129110201 + ... + 1129121006.

It is an arithmetic number, because the mean of its divisors is an integer number (2034666318408).

Almost surely, 2^{12201223211421} is an apocalyptic number.

It is an amenable number.

12201223211421 is a deficient number, since it is larger than the sum of its proper divisors (4076107335843).

12201223211421 is a wasteful number, since it uses less digits than its factorization.

12201223211421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258233011.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 12201223211421 its reverse (12411232210221), we get a palindrome (24612455421642).

The spelling of 12201223211421 in words is "twelve trillion, two hundred one billion, two hundred twenty-three million, two hundred eleven thousand, four hundred twenty-one".