2112120231 has 16 divisors (see below), whose sum is σ = 3037722240. Its totient is φ = 1297651680.

The previous prime is 2112120229. The next prime is 2112120233. The reversal of 2112120231 is 1320212112.

It is an interprime number because it is at equal distance from previous prime (2112120229) and next prime (2112120233).

It is not a de Polignac number, because 2112120231 - 2¹ = 2112120229 is a prime.

It is a super-2 number, since 2×2112120231² = 8922103740398986722, 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 2112120231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112120233) 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 15 ways as a sum of consecutive naturals, for example, 19605 + ... + 67886.

It is an arithmetic number, because the mean of its divisors is an integer number (189857640).

Almost surely, 2^2112120231 is an apocalyptic number.

2112120231 is a deficient number, since it is larger than the sum of its proper divisors (925602009).

2112120231 is a wasteful number, since it uses less digits than its factorization.

2112120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88126.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2112120231 is about 45957.8092493539. The cubic root of 2112120231 is about 1283.0380778154.

Adding to 2112120231 its reverse (1320212112), we get a palindrome (3432332343).

The spelling of 2112120231 in words is "two billion, one hundred twelve million, one hundred twenty thousand, two hundred thirty-one".