12440122403 has 4 divisors (see below), whose sum is σ = 12449224080. Its totient is φ = 12431020728.

The previous prime is 12440122399. The next prime is 12440122411. The reversal of 12440122403 is 30422104421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30422104421 = 76463 ⋅397867.

It is a cyclic number.

It is not a de Polignac number, because 12440122403 - 2² = 12440122399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12440122483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4548788 + ... + 4551521.

It is an arithmetic number, because the mean of its divisors is an integer number (3112306020).

Almost surely, 2^12440122403 is an apocalyptic number.

12440122403 is a deficient number, since it is larger than the sum of its proper divisors (9101677).

12440122403 is an equidigital number, since it uses as much as digits as its factorization.

12440122403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101676.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12440122403 its reverse (30422104421), we get a palindrome (42862226824).

The spelling of 12440122403 in words is "twelve billion, four hundred forty million, one hundred twenty-two thousand, four hundred three".