211113300021 has 32 divisors (see below), whose sum is σ = 321006204288. Its totient is φ = 122259456000.

The previous prime is 211113300017. The next prime is 211113300067. The reversal of 211113300021 is 120003311112.

It is a happy number.

It is not a de Polignac number, because 211113300021 - 2² = 211113300017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211113300011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8784021 + ... + 8808021.

It is an arithmetic number, because the mean of its divisors is an integer number (10031443884).

Almost surely, 2^211113300021 is an apocalyptic number.

It is an amenable number.

211113300021 is a deficient number, since it is larger than the sum of its proper divisors (109892904267).

211113300021 is a wasteful number, since it uses less digits than its factorization.

211113300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37301.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 211113300021 its reverse (120003311112), we get a palindrome (331116611133).

The spelling of 211113300021 in words is "two hundred eleven billion, one hundred thirteen million, three hundred thousand, twenty-one".