21202110013 has 8 divisors (see below), whose sum is σ = 25506297920. Its totient is φ = 17216750880.

The previous prime is 21202109959. The next prime is 21202110019. The reversal of 21202110013 is 31001120212.

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

It is not a de Polignac number, because 21202110013 - 2²⁵ = 21168555581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21202109975 and 21202110002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202110019) 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, 79707048 + ... + 79707313.

It is an arithmetic number, because the mean of its divisors is an integer number (3188287240).

Almost surely, 2^21202110013 is an apocalyptic number.

It is an amenable number.

21202110013 is a deficient number, since it is larger than the sum of its proper divisors (4304187907).

21202110013 is a wasteful number, since it uses less digits than its factorization.

21202110013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159414387.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21202110013 its reverse (31001120212), we get a palindrome (52203230225).

The spelling of 21202110013 in words is "twenty-one billion, two hundred two million, one hundred ten thousand, thirteen".