12013033121 has 2 divisors, whose sum is σ = 12013033122. Its totient is φ = 12013033120.

The previous prime is 12013033111. The next prime is 12013033139. The reversal of 12013033121 is 12133031021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10345127521 + 1667905600 = 101711^2 + 40840^2 .

It is an emirp because it is prime and its reverse (12133031021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12013033121 - 2²² = 12008838817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12013033121.

It is not a weakly prime, because it can be changed into another prime (12013033111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006516560 + 6006516561.

It is an arithmetic number, because the mean of its divisors is an integer number (6006516561).

Almost surely, 2^12013033121 is an apocalyptic number.

It is an amenable number.

12013033121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013033121 is an equidigital number, since it uses as much as digits as its factorization.

12013033121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12013033121 its reverse (12133031021), we get a palindrome (24146064142).

The spelling of 12013033121 in words is "twelve billion, thirteen million, thirty-three thousand, one hundred twenty-one".