211121021111013 has 96 divisors (see below), whose sum is σ = 336319609866240. Its totient is φ = 126832323571200.

The previous prime is 211121021111003. The next prime is 211121021111029. The reversal of 211121021111013 is 310111120121112.

211121021111013 is a `hidden beast` number, since 211 + 121 + 0 + 211 + 110 + 13 = 666.

It is not a de Polignac number, because 211121021111013 - 2⁵ = 211121021110981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121021111003) 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 95 ways as a sum of consecutive naturals, for example, 684132756 + ... + 684441282.

It is an arithmetic number, because the mean of its divisors is an integer number (3503329269440).

Almost surely, 2^{211121021111013} is an apocalyptic number.

It is an amenable number.

211121021111013 is a deficient number, since it is larger than the sum of its proper divisors (125198588755227).

211121021111013 is a wasteful number, since it uses less digits than its factorization.

211121021111013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309459 (or 309456 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 211121021111013 its reverse (310111120121112), we get a palindrome (521232141232125).

The spelling of 211121021111013 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty-one million, one hundred eleven thousand, thirteen".