12081298021 has 16 divisors (see below), whose sum is σ = 14014264320. Its totient is φ = 10322991360.

The previous prime is 12081298003. The next prime is 12081298049. The reversal of 12081298021 is 12089218021.

12081298021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12081298021 - 2²⁹ = 11544427109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12081298001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642436 + ... + 660973.

It is an arithmetic number, because the mean of its divisors is an integer number (875891520).

Almost surely, 2^12081298021 is an apocalyptic number.

It is an amenable number.

12081298021 is a deficient number, since it is larger than the sum of its proper divisors (1932966299).

12081298021 is a wasteful number, since it uses less digits than its factorization.

12081298021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303476.

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 12081298021 in words is "twelve billion, eighty-one million, two hundred ninety-eight thousand, twenty-one".