12201011112221 has 8 divisors (see below), whose sum is σ = 12986354916864. Its totient is φ = 11423182559680.

The previous prime is 12201011112211. The next prime is 12201011112259. The reversal of 12201011112221 is 12221111010221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12201011112221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12201011112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201011112211) 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, 1878809675 + ... + 1878816168.

It is an arithmetic number, because the mean of its divisors is an integer number (1623294364608).

Almost surely, 2^{12201011112221} is an apocalyptic number.

It is an amenable number.

12201011112221 is a deficient number, since it is larger than the sum of its proper divisors (785343804643).

12201011112221 is a wasteful number, since it uses less digits than its factorization.

12201011112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757626051.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12201011112221 its reverse (12221111010221), we get a palindrome (24422122122442).

The spelling of 12201011112221 in words is "twelve trillion, two hundred one billion, eleven million, one hundred twelve thousand, two hundred twenty-one".