12030321013 has 4 divisors (see below), whose sum is σ = 12030541740. Its totient is φ = 12030100288.

The previous prime is 12030320993. The next prime is 12030321047. The reversal of 12030321013 is 31012303021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31012303021 = 7 ⋅4430329003.

It can be written as a sum of positive squares in 2 ways, for example, as 13118884 + 12017202129 = 3622^2 + 109623^2 .

It is a cyclic number.

It is not a de Polignac number, because 12030321013 - 2⁹ = 12030320501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030321913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36831 + ... + 159427.

It is an arithmetic number, because the mean of its divisors is an integer number (3007635435).

Almost surely, 2^12030321013 is an apocalyptic number.

It is an amenable number.

12030321013 is a deficient number, since it is larger than the sum of its proper divisors (220727).

12030321013 is an equidigital number, since it uses as much as digits as its factorization.

12030321013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220726.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 12030321013 its reverse (31012303021), we get a palindrome (43042624034).

The spelling of 12030321013 in words is "twelve billion, thirty million, three hundred twenty-one thousand, thirteen".