21210021010011 has 16 divisors (see below), whose sum is σ = 28470540441888. Its totient is φ = 14044823520000.

The previous prime is 21210021009979. The next prime is 21210021010043. The reversal of 21210021010011 is 11001012001212.

It is an interprime number because it is at equal distance from previous prime (21210021009979) and next prime (21210021010043).

It is not a de Polignac number, because 21210021010011 - 2⁵ = 21210021009979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210021014011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6923490 + ... + 9505511.

It is an arithmetic number, because the mean of its divisors is an integer number (1779408777618).

Almost surely, 2^{21210021010011} is an apocalyptic number.

21210021010011 is a deficient number, since it is larger than the sum of its proper divisors (7260519431877).

21210021010011 is a wasteful number, since it uses less digits than its factorization.

21210021010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16431902.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21210021010011 its reverse (11001012001212), we get a palindrome (32211033011223).

The spelling of 21210021010011 in words is "twenty-one trillion, two hundred ten billion, twenty-one million, ten thousand, eleven".