21113302303021 has 8 divisors (see below), whose sum is σ = 21165080400000. Its totient is φ = 21061586931840.

The previous prime is 21113302303007. The next prime is 21113302303033. The reversal of 21113302303021 is 12030320331112.

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 21113302303021 - 2⁷ = 21113302302893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21113302302983 and 21113302303001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113302703021) 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, 15007396 + ... + 16353853.

It is an arithmetic number, because the mean of its divisors is an integer number (2645635050000).

Almost surely, 2^{21113302303021} is an apocalyptic number.

It is an amenable number.

21113302303021 is a deficient number, since it is larger than the sum of its proper divisors (51778096979).

21113302303021 is an equidigital number, since it uses as much as digits as its factorization.

21113302303021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31362899.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21113302303021 its reverse (12030320331112), we get a palindrome (33143622634133).

The spelling of 21113302303021 in words is "twenty-one trillion, one hundred thirteen billion, three hundred two million, three hundred three thousand, twenty-one".