21030303013331 has 6 divisors (see below), whose sum is σ = 22340148876060. Its totient is φ = 19793226365216.

The previous prime is 21030303013319. The next prime is 21030303013333. The reversal of 21030303013331 is 13331030303012.

It is not a de Polignac number, because 21030303013331 - 2¹⁴ = 21030302996947 is a prime.

It is a super-2 number, since 2×21030303013331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21030303013297 and 21030303013306.

It is not an unprimeable number, because it can be changed into a prime (21030303013333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36384607001 + ... + 36384607578.

It is an arithmetic number, because the mean of its divisors is an integer number (3723358146010).

Almost surely, 2^{21030303013331} is an apocalyptic number.

21030303013331 is a deficient number, since it is larger than the sum of its proper divisors (1309845862729).

21030303013331 is an equidigital number, since it uses as much as digits as its factorization.

21030303013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72769214613 (or 72769214596 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 21030303013331 its reverse (13331030303012), we get a palindrome (34361333316343).

The spelling of 21030303013331 in words is "twenty-one trillion, thirty billion, three hundred three million, thirteen thousand, three hundred thirty-one".