21030233203013 has 2 divisors, whose sum is σ = 21030233203014. Its totient is φ = 21030233203012.

The previous prime is 21030233202983. The next prime is 21030233203037. The reversal of 21030233203013 is 31030233203012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11003935259524 + 10026297943489 = 3317218^2 + 3166433^2 .

It is a cyclic number.

It is not a de Polignac number, because 21030233203013 - 2¹² = 21030233198917 is a prime.

It is a super-2 number, since 2×21030233203013² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21030233203013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21030233203813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515116601506 + 10515116601507.

It is an arithmetic number, because the mean of its divisors is an integer number (10515116601507).

Almost surely, 2^{21030233203013} is an apocalyptic number.

It is an amenable number.

21030233203013 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030233203013 is an equidigital number, since it uses as much as digits as its factorization.

21030233203013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21030233203013 its reverse (31030233203012), we get a palindrome (52060466406025).

Subtracting 21030233203013 from its reverse (31030233203012), we obtain a palindrome (9999999999999).

The spelling of 21030233203013 in words is "twenty-one trillion, thirty billion, two hundred thirty-three million, two hundred three thousand, thirteen".