211012210111 has 4 divisors (see below), whose sum is σ = 216158849424. Its totient is φ = 205865570800.

The previous prime is 211012210093. The next prime is 211012210127. The reversal of 211012210111 is 111012210112.

It is a happy number.

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 211012210111 - 2⁹ = 211012209599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211012210091 and 211012210100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012210511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2573319595 + ... + 2573319676.

It is an arithmetic number, because the mean of its divisors is an integer number (54039712356).

Almost surely, 2^211012210111 is an apocalyptic number.

211012210111 is a deficient number, since it is larger than the sum of its proper divisors (5146639313).

211012210111 is an equidigital number, since it uses as much as digits as its factorization.

211012210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146639312.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211012210111 its reverse (111012210112), we get a palindrome (322024420223).

Subtracting from 211012210111 its reverse (111012210112), we obtain a palindrome (99999999999).

The spelling of 211012210111 in words is "two hundred eleven billion, twelve million, two hundred ten thousand, one hundred eleven".