21031322102013 has 8 divisors (see below), whose sum is σ = 28330853141248. Its totient is φ = 13876336232064.

The previous prime is 21031322101987. The next prime is 21031322102017. The reversal of 21031322102013 is 31020122313012.

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

It is not a de Polignac number, because 21031322102013 - 2⁵ = 21031322101981 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 (21031322102017) 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, 36136291981 + ... + 36136292562.

It is an arithmetic number, because the mean of its divisors is an integer number (3541356642656).

Almost surely, 2^{21031322102013} is an apocalyptic number.

It is an amenable number.

21031322102013 is a deficient number, since it is larger than the sum of its proper divisors (7299531039235).

21031322102013 is an equidigital number, since it uses as much as digits as its factorization.

21031322102013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72272584643.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21031322102013 its reverse (31020122313012), we get a palindrome (52051444415025).

The spelling of 21031322102013 in words is "twenty-one trillion, thirty-one billion, three hundred twenty-two million, one hundred two thousand, thirteen".