12001110100221 has 48 divisors (see below), whose sum is σ = 18206003013632. Its totient is φ = 7021097677440.

The previous prime is 12001110100207. The next prime is 12001110100237. The reversal of 12001110100221 is 12200101110021.

It is a de Polignac number, because none of the positive numbers 2^k-12001110100221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001110100197 and 12001110100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001110120221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1812130 + ... + 5223603.

Almost surely, 2^{12001110100221} is an apocalyptic number.

12001110100221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12001110100221 is a deficient number, since it is larger than the sum of its proper divisors (6204892913411).

12001110100221 is a wasteful number, since it uses less digits than its factorization.

12001110100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7035922 (or 7035911 counting only the distinct ones).

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

Adding to 12001110100221 its reverse (12200101110021), we get a palindrome (24201211210242).

The spelling of 12001110100221 in words is "twelve trillion, one billion, one hundred ten million, one hundred thousand, two hundred twenty-one".