12110221021 has 16 divisors (see below), whose sum is σ = 12839523840. Its totient is φ = 11404128960.

The previous prime is 12110221001. The next prime is 12110221049. The reversal of 12110221021 is 12012201121.

It is a cyclic number.

It is not a de Polignac number, because 12110221021 - 2¹¹ = 12110218973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12110220992 and 12110221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110221001) 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, 341691 + ... + 375463.

It is an arithmetic number, because the mean of its divisors is an integer number (802470240).

Almost surely, 2^12110221021 is an apocalyptic number.

It is an amenable number.

12110221021 is a deficient number, since it is larger than the sum of its proper divisors (729302819).

12110221021 is a wasteful number, since it uses less digits than its factorization.

12110221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34116.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12110221021 its reverse (12012201121), we get a palindrome (24122422142).

The spelling of 12110221021 in words is "twelve billion, one hundred ten million, two hundred twenty-one thousand, twenty-one".