12134203421 has 8 divisors (see below), whose sum is σ = 12437867904. Its totient is φ = 11830906080.

The previous prime is 12134203381. The next prime is 12134203423. The reversal of 12134203421 is 12430243121.

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 12134203421 - 2²² = 12130009117 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 (12134203423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24245 + ... + 157658.

It is an arithmetic number, because the mean of its divisors is an integer number (1554733488).

Almost surely, 2^12134203421 is an apocalyptic number.

It is an amenable number.

12134203421 is a deficient number, since it is larger than the sum of its proper divisors (303664483).

12134203421 is a wasteful number, since it uses less digits than its factorization.

12134203421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183571.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12134203421 its reverse (12430243121), we get a palindrome (24564446542).

The spelling of 12134203421 in words is "twelve billion, one hundred thirty-four million, two hundred three thousand, four hundred twenty-one".