12041011021 has 8 divisors (see below), whose sum is σ = 12978056504. Its totient is φ = 11105510400.

The previous prime is 12041011001. The next prime is 12041011043. The reversal of 12041011021 is 12011014021.

It can be written as a sum of positive squares in 4 ways, for example, as 149108521 + 11891902500 = 12211^2 + 109050^2 .

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 12041011021 - 2³³ = 3451076429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12041010992 and 12041011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12041011001) 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, 369996 + ... + 401221.

It is an arithmetic number, because the mean of its divisors is an integer number (1622257063).

Almost surely, 2^12041011021 is an apocalyptic number.

It is an amenable number.

12041011021 is a deficient number, since it is larger than the sum of its proper divisors (937045483).

12041011021 is a wasteful number, since it uses less digits than its factorization.

12041011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772431.

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

Adding to 12041011021 its reverse (12011014021), we get a palindrome (24052025042).

The spelling of 12041011021 in words is "twelve billion, forty-one million, eleven thousand, twenty-one".