12110101201221 has 64 divisors (see below), whose sum is σ = 17042493726720. Its totient is φ = 7641551232000.

The previous prime is 12110101201171. The next prime is 12110101201243. The reversal of 12110101201221 is 12210210101121.

It is a happy number.

It is not a de Polignac number, because 12110101201221 - 2¹⁴ = 12110101184837 is a prime.

It is a super-2 number, since 2×12110101201221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12110101201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110101205221) 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 63 ways as a sum of consecutive naturals, for example, 279844816 + ... + 279888086.

It is an arithmetic number, because the mean of its divisors is an integer number (266288964480).

Almost surely, 2^{12110101201221} is an apocalyptic number.

It is an amenable number.

12110101201221 is a deficient number, since it is larger than the sum of its proper divisors (4932392525499).

12110101201221 is a wasteful number, since it uses less digits than its factorization.

12110101201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43898.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12110101201221 its reverse (12210210101121), we get a palindrome (24320311302342).

The spelling of 12110101201221 in words is "twelve trillion, one hundred ten billion, one hundred one million, two hundred one thousand, two hundred twenty-one".