12000010111221 has 8 divisors (see below), whose sum is σ = 17454560161824. Its totient is φ = 7272733400720.

The previous prime is 12000010111211. The next prime is 12000010111289. The reversal of 12000010111221 is 12211101000021.

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

It is a cyclic number.

It is not a de Polignac number, because 12000010111221 - 2⁷ = 12000010111093 is a prime.

It is a super-2 number, since 2×12000010111221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12000010111197 and 12000010111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000010111211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181818334986 + ... + 181818335051.

It is an arithmetic number, because the mean of its divisors is an integer number (2181820020228).

Almost surely, 2^{12000010111221} is an apocalyptic number.

12000010111221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12000010111221 is a deficient number, since it is larger than the sum of its proper divisors (5454550050603).

12000010111221 is a wasteful number, since it uses less digits than its factorization.

12000010111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363636670051.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12000010111221 its reverse (12211101000021), we get a palindrome (24211111111242).

The spelling of 12000010111221 in words is "twelve trillion, ten million, one hundred eleven thousand, two hundred twenty-one".