21210330113 has 16 divisors (see below), whose sum is σ = 24874498176. Its totient is φ = 17707092480.

The previous prime is 21210330103. The next prime is 21210330131. The reversal of 21210330113 is 31103301212.

It is not a de Polignac number, because 21210330113 - 2¹² = 21210326017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21210330091 and 21210330100.

It is not an unprimeable number, because it can be changed into a prime (21210330103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6443 + ... + 206063.

It is an arithmetic number, because the mean of its divisors is an integer number (1554656136).

Almost surely, 2^21210330113 is an apocalyptic number.

It is an amenable number.

21210330113 is a deficient number, since it is larger than the sum of its proper divisors (3664168063).

21210330113 is a wasteful number, since it uses less digits than its factorization.

21210330113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200024.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21210330113 its reverse (31103301212), we get a palindrome (52313631325).

The spelling of 21210330113 in words is "twenty-one billion, two hundred ten million, three hundred thirty thousand, one hundred thirteen".