13413432021 has 16 divisors (see below), whose sum is σ = 20658120768. Its totient is φ = 7651155200.

The previous prime is 13413432007. The next prime is 13413432047. The reversal of 13413432021 is 12023431431.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13413432021 - 2¹⁰ = 13413430997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13413431982 and 13413432000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13413432001) 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, 11954370 + ... + 11955491.

It is an arithmetic number, because the mean of its divisors is an integer number (1291132548).

Almost surely, 2^13413432021 is an apocalyptic number.

13413432021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13413432021 is a deficient number, since it is larger than the sum of its proper divisors (7244688747).

13413432021 is a wasteful number, since it uses less digits than its factorization.

13413432021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23909892.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 13413432021 its reverse (12023431431), we get a palindrome (25436863452).

The spelling of 13413432021 in words is "thirteen billion, four hundred thirteen million, four hundred thirty-two thousand, twenty-one".