2112877881 has 24 divisors (see below), whose sum is σ = 3316202240. Its totient is φ = 1291399200.

The previous prime is 2112877849. The next prime is 2112877901. The reversal of 2112877881 is 1887782112.

It is a happy number.

It is not a de Polignac number, because 2112877881 - 2⁵ = 2112877849 is a prime.

It is a super-2 number, since 2×2112877881² = 8928505880038100322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2112877381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193990 + ... + 204591.

Almost surely, 2^2112877881 is an apocalyptic number.

It is an amenable number.

2112877881 is a deficient number, since it is larger than the sum of its proper divisors (1203324359).

2112877881 is a wasteful number, since it uses less digits than its factorization.

2112877881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398637 (or 398634 counting only the distinct ones).

The product of its digits is 100352, while the sum is 45.

The square root of 2112877881 is about 45966.0513966558. The cubic root of 2112877881 is about 1283.1914746365.

The spelling of 2112877881 in words is "two billion, one hundred twelve million, eight hundred seventy-seven thousand, eight hundred eighty-one".