211210212102111 has 6 divisors (see below), whose sum is σ = 305081417480840. Its totient is φ = 140806808068068.

The previous prime is 211210212102077. The next prime is 211210212102121. The reversal of 211210212102111 is 111201212012112.

It is a happy number.

211210212102111 is a `hidden beast` number, since 2 + 11 + 210 + 21 + 210 + 211 + 1 = 666.

211210212102111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211210212102111 - 2¹⁸ = 211210211839967 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 (211210212102121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11733900672331 + ... + 11733900672348.

Almost surely, 2^{211210212102111} is an apocalyptic number.

211210212102111 is a deficient number, since it is larger than the sum of its proper divisors (93871205378729).

211210212102111 is a wasteful number, since it uses less digits than its factorization.

211210212102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23467801344685 (or 23467801344682 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 211210212102111 its reverse (111201212012112), we get a palindrome (322411424114223).

The spelling of 211210212102111 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twelve million, one hundred two thousand, one hundred eleven".