2112107157 has 12 divisors (see below), whose sum is σ = 3163815200. Its totient is φ = 1408071276.

The previous prime is 2112107147. The next prime is 2112107189. The reversal of 2112107157 is 7517012112.

It is not a de Polignac number, because 2112107157 - 2¹⁸ = 2111845013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112107157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112107147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4345657 + ... + 4346142.

Almost surely, 2^2112107157 is an apocalyptic number.

2112107157 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2112107157 is a deficient number, since it is larger than the sum of its proper divisors (1051708043).

2112107157 is an frugal number, since it uses more digits than its factorization.

2112107157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8691814 (or 8691802 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 27.

The square root of 2112107157 is about 45957.6670099778. The cubic root of 2112107157 is about 1283.0354304796.

Adding to 2112107157 its reverse (7517012112), we get a palindrome (9629119269).

The spelling of 2112107157 in words is "two billion, one hundred twelve million, one hundred seven thousand, one hundred fifty-seven".