12043030421 has 2 divisors, whose sum is σ = 12043030422. Its totient is φ = 12043030420.

The previous prime is 12043030411. The next prime is 12043030427. The reversal of 12043030421 is 12403034021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8795626225 + 3247404196 = 93785^2 + 56986^2 .

It is a cyclic number.

It is not a de Polignac number, because 12043030421 - 2¹⁸ = 12042768277 is a prime.

It is a super-2 number, since 2×12043030421² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12043030393 and 12043030402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12043030427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6021515210 + 6021515211.

It is an arithmetic number, because the mean of its divisors is an integer number (6021515211).

Almost surely, 2^12043030421 is an apocalyptic number.

It is an amenable number.

12043030421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12043030421 is an equidigital number, since it uses as much as digits as its factorization.

12043030421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12043030421 its reverse (12403034021), we get a palindrome (24446064442).

The spelling of 12043030421 in words is "twelve billion, forty-three million, thirty thousand, four hundred twenty-one".