21313100211 has 12 divisors (see below), whose sum is σ = 30771577368. Its totient is φ = 13115753664.

The previous prime is 21313100201. The next prime is 21313100257. The reversal of 21313100211 is 11200131312.

It is a happy number.

It is not a de Polignac number, because 21313100211 - 2¹⁰ = 21313099187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21313100201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21018330 + ... + 21019343.

It is an arithmetic number, because the mean of its divisors is an integer number (2564298114).

Almost surely, 2^21313100211 is an apocalyptic number.

21313100211 is a deficient number, since it is larger than the sum of its proper divisors (9458477157).

21313100211 is a wasteful number, since it uses less digits than its factorization.

21313100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42037702 (or 42037689 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21313100211 its reverse (11200131312), we get a palindrome (32513231523).

The spelling of 21313100211 in words is "twenty-one billion, three hundred thirteen million, one hundred thousand, two hundred eleven".