212110212111 has 24 divisors (see below), whose sum is σ = 331354114560. Its totient is φ = 120333839472.

The previous prime is 212110212091. The next prime is 212110212113. The reversal of 212110212111 is 111212011212.

It is a happy number.

It is not a de Polignac number, because 212110212111 - 2⁵ = 212110212079 is a prime.

It is a super-2 number, since 2×212110212111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212110212113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5169951 + ... + 5210816.

It is an arithmetic number, because the mean of its divisors is an integer number (13806421440).

Almost surely, 2^212110212111 is an apocalyptic number.

212110212111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212110212111 is a deficient number, since it is larger than the sum of its proper divisors (119243902449).

212110212111 is a wasteful number, since it uses less digits than its factorization.

212110212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10380923 (or 10380916 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212110212111 its reverse (111212011212), we get a palindrome (323322223323).

The spelling of 212110212111 in words is "two hundred twelve billion, one hundred ten million, two hundred twelve thousand, one hundred eleven".