13001244421 has 12 divisors (see below), whose sum is σ = 14376218976. Its totient is φ = 11748520520.

The previous prime is 13001244407. The next prime is 13001244467. The reversal of 13001244421 is 12444210031.

It is a happy number.

It is not a de Polignac number, because 13001244421 - 2⁹ = 13001243909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13001244392 and 13001244401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001244401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301495 + ... + 341908.

It is an arithmetic number, because the mean of its divisors is an integer number (1198018248).

Almost surely, 2^13001244421 is an apocalyptic number.

13001244421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13001244421 is a deficient number, since it is larger than the sum of its proper divisors (1374974555).

13001244421 is a wasteful number, since it uses less digits than its factorization.

13001244421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643592 (or 643581 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 13001244421 its reverse (12444210031), we get a palindrome (25445454452).

The spelling of 13001244421 in words is "thirteen billion, one million, two hundred forty-four thousand, four hundred twenty-one".