12003421251 has 8 divisors (see below), whose sum is σ = 16946006544. Its totient is φ = 7531558400.

The previous prime is 12003421187. The next prime is 12003421253. The reversal of 12003421251 is 15212430021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12003421251 - 2⁶ = 12003421187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12003421253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117680550 + ... + 117680651.

It is an arithmetic number, because the mean of its divisors is an integer number (2118250818).

Almost surely, 2^12003421251 is an apocalyptic number.

12003421251 is a deficient number, since it is larger than the sum of its proper divisors (4942585293).

12003421251 is a wasteful number, since it uses less digits than its factorization.

12003421251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235361221.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 12003421251 its reverse (15212430021), we get a palindrome (27215851272).

The spelling of 12003421251 in words is "twelve billion, three million, four hundred twenty-one thousand, two hundred fifty-one".