21211013132111 has 48 divisors (see below), whose sum is σ = 23680277812800. Its totient is φ = 18982611648000.

The previous prime is 21211013132087. The next prime is 21211013132147. The reversal of 21211013132111 is 11123131011212.

It is a de Polignac number, because none of the positive numbers 2^k-21211013132111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211013134111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5586253865 + ... + 5586257661.

It is an arithmetic number, because the mean of its divisors is an integer number (493339121100).

Almost surely, 2^{21211013132111} is an apocalyptic number.

21211013132111 is a deficient number, since it is larger than the sum of its proper divisors (2469264680689).

21211013132111 is a wasteful number, since it uses less digits than its factorization.

21211013132111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416 (or 6405 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 21211013132111 its reverse (11123131011212), we get a palindrome (32334144143323).

The spelling of 21211013132111 in words is "twenty-one trillion, two hundred eleven billion, thirteen million, one hundred thirty-two thousand, one hundred eleven".