21013410211 has 4 divisors (see below), whose sum is σ = 21266583912. Its totient is φ = 20760236512.

The previous prime is 21013410199. The next prime is 21013410289. The reversal of 21013410211 is 11201431012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21013410211 - 2⁷ = 21013410083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21013410511) 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 3 ways as a sum of consecutive naturals, for example, 126586726 + ... + 126586891.

It is an arithmetic number, because the mean of its divisors is an integer number (5316645978).

Almost surely, 2^21013410211 is an apocalyptic number.

21013410211 is a deficient number, since it is larger than the sum of its proper divisors (253173701).

21013410211 is an equidigital number, since it uses as much as digits as its factorization.

21013410211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253173700.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21013410211 its reverse (11201431012), we get a palindrome (32214841223).

The spelling of 21013410211 in words is "twenty-one billion, thirteen million, four hundred ten thousand, two hundred eleven".