12040301021 has 12 divisors (see below), whose sum is σ = 14012728380. Its totient is φ = 10315347840.

The previous prime is 12040300973. The next prime is 12040301029. The reversal of 12040301021 is 12010304021.

It can be written as a sum of positive squares in 2 ways, for example, as 7415620996 + 4624680025 = 86114^2 + 68005^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12040301021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12040300987 and 12040301005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040301029) 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 11 ways as a sum of consecutive naturals, for example, 47525 + ... + 162293.

It is an arithmetic number, because the mean of its divisors is an integer number (1167727365).

Almost surely, 2^12040301021 is an apocalyptic number.

It is an amenable number.

12040301021 is a deficient number, since it is larger than the sum of its proper divisors (1972427359).

12040301021 is a wasteful number, since it uses less digits than its factorization.

12040301021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116924 (or 116917 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12040301021 its reverse (12010304021), we get a palindrome (24050605042).

The spelling of 12040301021 in words is "twelve billion, forty million, three hundred one thousand, twenty-one".