12100240221 has 16 divisors (see below), whose sum is σ = 16229846208. Its totient is φ = 8018841600.

The previous prime is 12100240219. The next prime is 12100240247. The reversal of 12100240221 is 12204200121.

12100240221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12100240221 - 2¹ = 12100240219 is a prime.

It is a super-2 number, since 2×12100240221² (a number of 21 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 12100240221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100240921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436701 + ... + 463581.

It is an arithmetic number, because the mean of its divisors is an integer number (1014365388).

Almost surely, 2^12100240221 is an apocalyptic number.

It is an amenable number.

12100240221 is a deficient number, since it is larger than the sum of its proper divisors (4129605987).

12100240221 is a wasteful number, since it uses less digits than its factorization.

12100240221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27772.

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

Adding to 12100240221 its reverse (12204200121), we get a palindrome (24304440342).

The spelling of 12100240221 in words is "twelve billion, one hundred million, two hundred forty thousand, two hundred twenty-one".