12221200200021 has 16 divisors (see below), whose sum is σ = 18161535902400. Its totient is φ = 7264614359808.

The previous prime is 12221200200017. The next prime is 12221200200047. The reversal of 12221200200021 is 12000200212221.

It is not a de Polignac number, because 12221200200021 - 2² = 12221200200017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221200200061) 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, 6306087886 + ... + 6306089823.

It is an arithmetic number, because the mean of its divisors is an integer number (1135095993900).

Almost surely, 2^{12221200200021} is an apocalyptic number.

It is an amenable number.

12221200200021 is a deficient number, since it is larger than the sum of its proper divisors (5940335702379).

12221200200021 is a wasteful number, since it uses less digits than its factorization.

12221200200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12612177748.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12221200200021 its reverse (12000200212221), we get a palindrome (24221400412242).

The spelling of 12221200200021 in words is "twelve trillion, two hundred twenty-one billion, two hundred million, two hundred thousand, twenty-one".