12000003421 has 12 divisors (see below), whose sum is σ = 14283822432. Its totient is φ = 10046512728.

The previous prime is 12000003359. The next prime is 12000003461. The reversal of 12000003421 is 12430000021.

It is a de Polignac number, because none of the positive numbers 2^k-12000003421 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 (12000003461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2845545 + ... + 2849758.

It is an arithmetic number, because the mean of its divisors is an integer number (1190318536).

Almost surely, 2^12000003421 is an apocalyptic number.

It is an amenable number.

12000003421 is a deficient number, since it is larger than the sum of its proper divisors (2283819011).

12000003421 is an equidigital number, since it uses as much as digits as its factorization.

12000003421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695360 (or 5695353 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 12000003421 its reverse (12430000021), we get a palindrome (24430003442).

The spelling of 12000003421 in words is "twelve billion, three thousand, four hundred twenty-one".