21001003413 has 32 divisors (see below), whose sum is σ = 31257633792. Its totient is φ = 12454732800.

The previous prime is 21001003379. The next prime is 21001003417. The reversal of 21001003413 is 31430010012.

It is not a de Polignac number, because 21001003413 - 2⁶ = 21001003349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21001003392 and 21001003401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001003417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255331 + ... + 327407.

It is an arithmetic number, because the mean of its divisors is an integer number (976801056).

Almost surely, 2^21001003413 is an apocalyptic number.

It is an amenable number.

21001003413 is a deficient number, since it is larger than the sum of its proper divisors (10256630379).

21001003413 is a wasteful number, since it uses less digits than its factorization.

21001003413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72365.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21001003413 its reverse (31430010012), we get a palindrome (52431013425).

The spelling of 21001003413 in words is "twenty-one billion, one million, three thousand, four hundred thirteen".