21030001331003 has 8 divisors (see below), whose sum is σ = 24034383901920. Its totient is φ = 18025642926720.

The previous prime is 21030001330993. The next prime is 21030001331021. The reversal of 21030001331003 is 30013310003012.

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

It is a cyclic number.

It is not a de Polignac number, because 21030001331003 - 2¹⁰ = 21030001329979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21030001331803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4136888 + ... + 7692453.

It is an arithmetic number, because the mean of its divisors is an integer number (3004297987740).

Almost surely, 2^{21030001331003} is an apocalyptic number.

21030001331003 is a deficient number, since it is larger than the sum of its proper divisors (3004382570917).

21030001331003 is a wasteful number, since it uses less digits than its factorization.

21030001331003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12083317.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21030001331003 its reverse (30013310003012), we get a palindrome (51043311334015).

The spelling of 21030001331003 in words is "twenty-one trillion, thirty billion, one million, three hundred thirty-one thousand, three".