12041211021 has 16 divisors (see below), whose sum is σ = 18350924928. Its totient is φ = 6879787200.

The previous prime is 12041211019. The next prime is 12041211041. The reversal of 12041211021 is 12011214021.

It is not a de Polignac number, because 12041211021 - 2¹ = 12041211019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12041211001) 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, 146791 + ... + 213611.

It is an arithmetic number, because the mean of its divisors is an integer number (1146932808).

Almost surely, 2^12041211021 is an apocalyptic number.

It is an amenable number.

12041211021 is a deficient number, since it is larger than the sum of its proper divisors (6309713907).

12041211021 is an equidigital number, since it uses as much as digits as its factorization.

12041211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75412.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12041211021 its reverse (12011214021), we get a palindrome (24052425042).

The spelling of 12041211021 in words is "twelve billion, forty-one million, two hundred eleven thousand, twenty-one".