21000323013213 has 8 divisors (see below), whose sum is σ = 28002798232288. Its totient is φ = 13999031568144.

The previous prime is 21000323013203. The next prime is 21000323013217. The reversal of 21000323013213 is 31231032300012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21000323013213 - 2⁸ = 21000323012957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21000323013213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000323013217) 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, 295902106 + ... + 295973067.

It is an arithmetic number, because the mean of its divisors is an integer number (3500349779036).

Almost surely, 2^{21000323013213} is an apocalyptic number.

It is an amenable number.

21000323013213 is a deficient number, since it is larger than the sum of its proper divisors (7002475219075).

21000323013213 is a wasteful number, since it uses less digits than its factorization.

21000323013213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591887003.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21000323013213 its reverse (31231032300012), we get a palindrome (52231355313225).

The spelling of 21000323013213 in words is "twenty-one trillion, three hundred twenty-three million, thirteen thousand, two hundred thirteen".