21303010223213 has 4 divisors (see below), whose sum is σ = 21303019547040. Its totient is φ = 21303000899388.

The previous prime is 21303010223203. The next prime is 21303010223249. The reversal of 21303010223213 is 31232201030312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21303010223213 - 2⁴ = 21303010223197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303010223203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1346858 + ... + 6664836.

It is an arithmetic number, because the mean of its divisors is an integer number (5325754886760).

Almost surely, 2^{21303010223213} is an apocalyptic number.

It is an amenable number.

21303010223213 is a deficient number, since it is larger than the sum of its proper divisors (9323827).

21303010223213 is an equidigital number, since it uses as much as digits as its factorization.

21303010223213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9323826.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21303010223213 its reverse (31232201030312), we get a palindrome (52535211253525).

The spelling of 21303010223213 in words is "twenty-one trillion, three hundred three billion, ten million, two hundred twenty-three thousand, two hundred thirteen".