211010021111 has 16 divisors (see below), whose sum is σ = 224348110560. Its totient is φ = 197776465920.

The previous prime is 211010021093. The next prime is 211010021119. The reversal of 211010021111 is 111120010112.

It is not a de Polignac number, because 211010021111 - 2¹⁰ = 211010020087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211010021092 and 211010021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211010021119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4084301 + ... + 4135641.

It is an arithmetic number, because the mean of its divisors is an integer number (14021756910).

Almost surely, 2^211010021111 is an apocalyptic number.

211010021111 is a deficient number, since it is larger than the sum of its proper divisors (13338089449).

211010021111 is a wasteful number, since it uses less digits than its factorization.

211010021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52354.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 211010021111 its reverse (111120010112), we get a palindrome (322130031223).

The spelling of 211010021111 in words is "two hundred eleven billion, ten million, twenty-one thousand, one hundred eleven".