2102212111 has 8 divisors (see below), whose sum is σ = 2121956784. Its totient is φ = 2082487680.

The previous prime is 2102212109. The next prime is 2102212157. The reversal of 2102212111 is 1112122012.

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 2102212111 - 2¹ = 2102212109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102212091 and 2102212100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102210111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275001 + ... + 282541.

It is an arithmetic number, because the mean of its divisors is an integer number (265244598).

Almost surely, 2^2102212111 is an apocalyptic number.

2102212111 is a deficient number, since it is larger than the sum of its proper divisors (19744673).

2102212111 is a wasteful number, since it uses less digits than its factorization.

2102212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10121.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2102212111 is about 45849.8867065122. The cubic root of 2102212111 is about 1281.0286553315.

Adding to 2102212111 its reverse (1112122012), we get a palindrome (3214334123).

Subtracting from 2102212111 its reverse (1112122012), we obtain a palindrome (990090099).

It can be divided in two parts, 21022 and 12111, that added together give a palindrome (33133).

The spelling of 2102212111 in words is "two billion, one hundred two million, two hundred twelve thousand, one hundred eleven".