12432111123421 has 8 divisors (see below), whose sum is σ = 13999796690688. Its totient is φ = 10937341164000.

The previous prime is 12432111123347. The next prime is 12432111123431.

12432111123421 is nontrivially palindromic in base 10.

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 12432111123421 - 2¹⁷ = 12432110992349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12432111123421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432111123431) 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, 18228901600 + ... + 18228902281.

It is an arithmetic number, because the mean of its divisors is an integer number (1749974586336).

Almost surely, 2^{12432111123421} is an apocalyptic number.

12432111123421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12432111123421 is a deficient number, since it is larger than the sum of its proper divisors (1567685567267).

12432111123421 is a wasteful number, since it uses less digits than its factorization.

12432111123421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36457803923.

The product of its digits is 2304, while the sum is 28.

It can be divided in two parts, 1243211 and 1123421, that added together give a palindrome (2366632).

The spelling of 12432111123421 in words is "twelve trillion, four hundred thirty-two billion, one hundred eleven million, one hundred twenty-three thousand, four hundred twenty-one".