12035406421 has 2 divisors, whose sum is σ = 12035406422. Its totient is φ = 12035406420.

The previous prime is 12035406407. The next prime is 12035406491. The reversal of 12035406421 is 12460453021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10939068100 + 1096338321 = 104590^2 + 33111^2 .

It is a cyclic number.

It is not a de Polignac number, because 12035406421 - 2⁵ = 12035406389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12035406421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12035406491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6017703210 + 6017703211.

It is an arithmetic number, because the mean of its divisors is an integer number (6017703211).

Almost surely, 2^12035406421 is an apocalyptic number.

It is an amenable number.

12035406421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12035406421 is an equidigital number, since it uses as much as digits as its factorization.

12035406421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 12035406421 its reverse (12460453021), we get a palindrome (24495859442).

The spelling of 12035406421 in words is "twelve billion, thirty-five million, four hundred six thousand, four hundred twenty-one".