21001423413003 has 8 divisors (see below), whose sum is σ = 30547524964416. Its totient is φ = 12728135401800.

The previous prime is 21001423412969. The next prime is 21001423413017. The reversal of 21001423413003 is 30031432410012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21001423413003 - 2²⁶ = 21001356304139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21001423413023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318203385013 + ... + 318203385078.

It is an arithmetic number, because the mean of its divisors is an integer number (3818440620552).

Almost surely, 2^{21001423413003} is an apocalyptic number.

21001423413003 is a deficient number, since it is larger than the sum of its proper divisors (9546101551413).

21001423413003 is a wasteful number, since it uses less digits than its factorization.

21001423413003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636406770105.

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

Adding to 21001423413003 its reverse (30031432410012), we get a palindrome (51032855823015).

The spelling of 21001423413003 in words is "twenty-one trillion, one billion, four hundred twenty-three million, four hundred thirteen thousand, three".