21302132013213 has 4 divisors (see below), whose sum is σ = 28402842684288. Its totient is φ = 14201421342140.

The previous prime is 21302132013209. The next prime is 21302132013241. The reversal of 21302132013213 is 31231023120312.

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.

It is a cyclic number.

It is not a de Polignac number, because 21302132013213 - 2² = 21302132013209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302132014213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550355335533 + ... + 3550355335538.

It is an arithmetic number, because the mean of its divisors is an integer number (7100710671072).

Almost surely, 2^{21302132013213} is an apocalyptic number.

It is an amenable number.

21302132013213 is a deficient number, since it is larger than the sum of its proper divisors (7100710671075).

21302132013213 is an equidigital number, since it uses as much as digits as its factorization.

21302132013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100710671074.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21302132013213 its reverse (31231023120312), we get a palindrome (52533155133525).

The spelling of 21302132013213 in words is "twenty-one trillion, three hundred two billion, one hundred thirty-two million, thirteen thousand, two hundred thirteen".