12013034321 has 2 divisors, whose sum is σ = 12013034322. Its totient is φ = 12013034320.

The previous prime is 12013034287. The next prime is 12013034381. The reversal of 12013034321 is 12343031021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6074020096 + 5939014225 = 77936^2 + 77065^2 .

It is a cyclic number.

It is not a de Polignac number, because 12013034321 - 2²⁶ = 11945925457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12013034293 and 12013034302.

It is not a weakly prime, because it can be changed into another prime (12013034381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006517160 + 6006517161.

It is an arithmetic number, because the mean of its divisors is an integer number (6006517161).

Almost surely, 2^12013034321 is an apocalyptic number.

It is an amenable number.

12013034321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013034321 is an equidigital number, since it uses as much as digits as its factorization.

12013034321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12013034321 its reverse (12343031021), we get a palindrome (24356065342).

It can be divided in two parts, 120130 and 34321, that added together give a palindrome (154451).

The spelling of 12013034321 in words is "twelve billion, thirteen million, thirty-four thousand, three hundred twenty-one".