12424421445 has 16 divisors (see below), whose sum is σ = 19993986432. Its totient is φ = 6588054080.

The previous prime is 12424421441. The next prime is 12424421447. The reversal of 12424421445 is 54412442421.

It is not a de Polignac number, because 12424421445 - 2² = 12424421441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12424421441) 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, 2391321 + ... + 2396510.

It is an arithmetic number, because the mean of its divisors is an integer number (1249624152).

Almost surely, 2^12424421445 is an apocalyptic number.

12424421445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12424421445 is a deficient number, since it is larger than the sum of its proper divisors (7569564987).

12424421445 is a wasteful number, since it uses less digits than its factorization.

12424421445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4788012.

The product of its digits is 40960, while the sum is 33.

Adding to 12424421445 its reverse (54412442421), we get a palindrome (66836863866).

The spelling of 12424421445 in words is "twelve billion, four hundred twenty-four million, four hundred twenty-one thousand, four hundred forty-five".