21320010323213 has 8 divisors (see below), whose sum is σ = 24825456764928. Its totient is φ = 17929496551824.

The previous prime is 21320010323201. The next prime is 21320010323257. The reversal of 21320010323213 is 31232301002312.

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 21320010323213 - 2⁴ = 21320010323197 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 (21320010323263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28733167181 + ... + 28733167922.

It is an arithmetic number, because the mean of its divisors is an integer number (3103182095616).

Almost surely, 2^{21320010323213} is an apocalyptic number.

It is an amenable number.

21320010323213 is a deficient number, since it is larger than the sum of its proper divisors (3505446441715).

21320010323213 is an equidigital number, since it uses as much as digits as its factorization.

21320010323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57466335163.

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

Adding to 21320010323213 its reverse (31232301002312), we get a palindrome (52552311325525).

The spelling of 21320010323213 in words is "twenty-one trillion, three hundred twenty billion, ten million, three hundred twenty-three thousand, two hundred thirteen".