210211111122011 has 4 divisors (see below), whose sum is σ = 216992114706624. Its totient is φ = 203430107537400.

The previous prime is 210211111121983. The next prime is 210211111122017. The reversal of 210211111122011 is 110221111112012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210211111122011 - 2¹⁰ = 210211111120987 is a prime.

It is a super-2 number, since 2×210211111122011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210211111122017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3390501792260 + ... + 3390501792321.

It is an arithmetic number, because the mean of its divisors is an integer number (54248028676656).

Almost surely, 2^{210211111122011} is an apocalyptic number.

210211111122011 is a deficient number, since it is larger than the sum of its proper divisors (6781003584613).

210211111122011 is an equidigital number, since it uses as much as digits as its factorization.

210211111122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781003584612.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 210211111122011 its reverse (110221111112012), we get a palindrome (320432222234023).

Subtracting from 210211111122011 its reverse (110221111112012), we obtain a palindrome (99990000009999).

The spelling of 210211111122011 in words is "two hundred ten trillion, two hundred eleven billion, one hundred eleven million, one hundred twenty-two thousand, eleven".