12421322403 has 16 divisors (see below), whose sum is σ = 19389382656. Its totient is φ = 6924778560.

The previous prime is 12421322401. The next prime is 12421322423. The reversal of 12421322403 is 30422312421.

It is a happy number.

It is not a de Polignac number, because 12421322403 - 2¹ = 12421322401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12421322401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7212451 + ... + 7214172.

It is an arithmetic number, because the mean of its divisors is an integer number (1211836416).

Almost surely, 2^12421322403 is an apocalyptic number.

12421322403 is a deficient number, since it is larger than the sum of its proper divisors (6968060253).

12421322403 is a wasteful number, since it uses less digits than its factorization.

12421322403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14426674.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12421322403 its reverse (30422312421), we get a palindrome (42843634824).

The spelling of 12421322403 in words is "twelve billion, four hundred twenty-one million, three hundred twenty-two thousand, four hundred three".