12201222101221 has 8 divisors (see below), whose sum is σ = 12242530076544. Its totient is φ = 12159940911360.

The previous prime is 12201222101209. The next prime is 12201222101231. The reversal of 12201222101221 is 12210122210221.

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

It is a cyclic number.

It is not a de Polignac number, because 12201222101221 - 2⁹ = 12201222100709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201222101231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5783581 + ... + 7606066.

It is an arithmetic number, because the mean of its divisors is an integer number (1530316259568).

Almost surely, 2^{12201222101221} is an apocalyptic number.

It is an amenable number.

12201222101221 is a deficient number, since it is larger than the sum of its proper divisors (41307975323).

12201222101221 is a wasteful number, since it uses less digits than its factorization.

12201222101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13392731.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12201222101221 its reverse (12210122210221), we get a palindrome (24411344311442).

The spelling of 12201222101221 in words is "twelve trillion, two hundred one billion, two hundred twenty-two million, one hundred one thousand, two hundred twenty-one".