211210101121111 has 8 divisors (see below), whose sum is σ = 213303274833600. Its totient is φ = 209116966322400.

The previous prime is 211210101121093. The next prime is 211210101121133. The reversal of 211210101121111 is 111121101012112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211210101121111 - 2⁵ = 211210101121079 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 (211210101127111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1241625 + ... + 20590333.

It is an arithmetic number, because the mean of its divisors is an integer number (26662909354200).

Almost surely, 2^{211210101121111} is an apocalyptic number.

211210101121111 is a deficient number, since it is larger than the sum of its proper divisors (2093173712489).

211210101121111 is a wasteful number, since it uses less digits than its factorization.

211210101121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19456889.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 211210101121111 its reverse (111121101012112), we get a palindrome (322331202133223).

The spelling of 211210101121111 in words is "two hundred eleven trillion, two hundred ten billion, one hundred one million, one hundred twenty-one thousand, one hundred eleven".