212232111111 has 24 divisors (see below), whose sum is σ = 325699495680. Its totient is φ = 132917029056.

The previous prime is 212232111103. The next prime is 212232111137. The reversal of 212232111111 is 111111232212.

It is a happy number.

212232111111 is a `hidden beast` number, since 212 + 232 + 111 + 111 = 666.

It is not a de Polignac number, because 212232111111 - 2³ = 212232111103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212232111181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10978855 + ... + 10998168.

It is an arithmetic number, because the mean of its divisors is an integer number (13570812320).

Almost surely, 2^212232111111 is an apocalyptic number.

212232111111 is a deficient number, since it is larger than the sum of its proper divisors (113467384569).

212232111111 is a wasteful number, since it uses less digits than its factorization.

212232111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21977095 (or 21977092 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 212232111111 its reverse (111111232212), we get a palindrome (323343343323).

The spelling of 212232111111 in words is "two hundred twelve billion, two hundred thirty-two million, one hundred eleven thousand, one hundred eleven".