12212221200221 has 8 divisors (see below), whose sum is σ = 13957860554880. Its totient is φ = 10466840927088.

The previous prime is 12212221200217. The next prime is 12212221200293. The reversal of 12212221200221 is 12200212221221.

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

It is not a de Polignac number, because 12212221200221 - 2² = 12212221200217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212221200193 and 12212221200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212221200121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64669361 + ... + 64857926.

It is an arithmetic number, because the mean of its divisors is an integer number (1744732569360).

Almost surely, 2^{12212221200221} is an apocalyptic number.

It is an amenable number.

12212221200221 is a deficient number, since it is larger than the sum of its proper divisors (1745639354659).

12212221200221 is a wasteful number, since it uses less digits than its factorization.

12212221200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129540763.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12212221200221 its reverse (12200212221221), we get a palindrome (24412433421442).

The spelling of 12212221200221 in words is "twelve trillion, two hundred twelve billion, two hundred twenty-one million, two hundred thousand, two hundred twenty-one".