2112111231 has 8 divisors (see below), whose sum is σ = 2964366720. Its totient is φ = 1333964952.

The previous prime is 2112111217. The next prime is 2112111241. The reversal of 2112111231 is 1321112112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2112111231 - 2⁷ = 2112111103 is a prime.

It is a super-2 number, since 2×2112111231² = 8922027704232670722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2112111231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112111241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18527235 + ... + 18527348.

It is an arithmetic number, because the mean of its divisors is an integer number (370545840).

Almost surely, 2^2112111231 is an apocalyptic number.

2112111231 is a deficient number, since it is larger than the sum of its proper divisors (852255489).

2112111231 is a wasteful number, since it uses less digits than its factorization.

2112111231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37054605.

The product of its digits is 24, while the sum is 15.

The square root of 2112111231 is about 45957.7113333551. The cubic root of 2112111231 is about 1283.0362554193.

Adding to 2112111231 its reverse (1321112112), we get a palindrome (3433223343).

The spelling of 2112111231 in words is "two billion, one hundred twelve million, one hundred eleven thousand, two hundred thirty-one".