12041020021 has 8 divisors (see below), whose sum is σ = 12387323520. Its totient is φ = 11699128272.

The previous prime is 12041019971. The next prime is 12041020067. The reversal of 12041020021 is 12002014021.

It is a happy number.

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 12041020021 - 2²⁹ = 11504149109 is a prime.

It is a super-2 number, since 2×12041020021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12041019983 and 12041020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12041023021) 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 7 ways as a sum of consecutive naturals, for example, 1097401 + ... + 1108318.

It is an arithmetic number, because the mean of its divisors is an integer number (1548415440).

Almost surely, 2^12041020021 is an apocalyptic number.

It is an amenable number.

12041020021 is a deficient number, since it is larger than the sum of its proper divisors (346303499).

12041020021 is a wasteful number, since it uses less digits than its factorization.

12041020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205875.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12041020021 its reverse (12002014021), we get a palindrome (24043034042).

The spelling of 12041020021 in words is "twelve billion, forty-one million, twenty thousand, twenty-one".