12000100012221 has 16 divisors (see below), whose sum is σ = 16941388896000. Its totient is φ = 7529442859008.

The previous prime is 12000100012213. The next prime is 12000100012231. The reversal of 12000100012221 is 12221000100021.

It is not a de Polignac number, because 12000100012221 - 2³ = 12000100012213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000100012197 and 12000100012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000100012231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19988380 + ... + 20579978.

It is an arithmetic number, because the mean of its divisors is an integer number (1058836806000).

Almost surely, 2^{12000100012221} is an apocalyptic number.

It is an amenable number.

12000100012221 is a deficient number, since it is larger than the sum of its proper divisors (4941288883779).

12000100012221 is a wasteful number, since it uses less digits than its factorization.

12000100012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989348.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12000100012221 its reverse (12221000100021), we get a palindrome (24221100112242).

The spelling of 12000100012221 in words is "twelve trillion, one hundred million, twelve thousand, two hundred twenty-one".