12000221101 has 6 divisors (see below), whose sum is σ = 13190325806. Its totient is φ = 10909291800.

The previous prime is 12000221099. The next prime is 12000221131. The reversal of 12000221101 is 10112200021.

It can be written as a sum of positive squares in only one way, i.e., 10150361001 + 1849860100 = 100749^2 + 43010^2 .

It is not a de Polignac number, because 12000221101 - 2¹ = 12000221099 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 (12000221131) 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 5 ways as a sum of consecutive naturals, for example, 49587570 + ... + 49587811.

Almost surely, 2^12000221101 is an apocalyptic number.

12000221101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12000221101 is a deficient number, since it is larger than the sum of its proper divisors (1190104705).

12000221101 is an equidigital number, since it uses as much as digits as its factorization.

12000221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99175403 (or 99175392 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12000221101 its reverse (10112200021), we get a palindrome (22112421122).

The spelling of 12000221101 in words is "twelve billion, two hundred twenty-one thousand, one hundred one".