210021211111011 has 16 divisors (see below), whose sum is σ = 301361197818528. Its totient is φ = 129617719488000.

The previous prime is 210021211111001. The next prime is 210021211111099. The reversal of 210021211111011 is 110111112120012.

It is not a de Polignac number, because 210021211111011 - 2⁹ = 210021211110499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210021211111001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33754611340 + ... + 33754617561.

It is an arithmetic number, because the mean of its divisors is an integer number (18835074863658).

Almost surely, 2^{210021211111011} is an apocalyptic number.

210021211111011 is a deficient number, since it is larger than the sum of its proper divisors (91339986707517).

210021211111011 is a wasteful number, since it uses less digits than its factorization.

210021211111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67509228982.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 210021211111011 its reverse (110111112120012), we get a palindrome (320132323231023).

The spelling of 210021211111011 in words is "two hundred ten trillion, twenty-one billion, two hundred eleven million, one hundred eleven thousand, eleven".