12013021043 has 2 divisors, whose sum is σ = 12013021044. Its totient is φ = 12013021042.

The previous prime is 12013021037. The next prime is 12013021057. The reversal of 12013021043 is 34012031021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12013021043 - 2¹² = 12013016947 is a prime.

It is not a weakly prime, because it can be changed into another prime (12013021243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006510521 + 6006510522.

It is an arithmetic number, because the mean of its divisors is an integer number (6006510522).

Almost surely, 2^12013021043 is an apocalyptic number.

12013021043 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013021043 is an equidigital number, since it uses as much as digits as its factorization.

12013021043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12013021043 its reverse (34012031021), we get a palindrome (46025052064).

The spelling of 12013021043 in words is "twelve billion, thirteen million, twenty-one thousand, forty-three".