2112173512 has 16 divisors (see below), whose sum is σ = 3960841500. Its totient is φ = 1055949120.

The previous prime is 2112173491. The next prime is 2112173519. The reversal of 2112173512 is 2153712112.

It can be written as a sum of positive squares in 2 ways, for example, as 1504353796 + 607819716 = 38786^2 + 24654^2 .

It is a super-2 number, since 2×2112173512² = 8922553889588828288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112173519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80962 + ... + 103822.

Almost surely, 2^2112173512 is an apocalyptic number.

It is an amenable number.

2112173512 is a deficient number, since it is larger than the sum of its proper divisors (1848667988).

2112173512 is a wasteful number, since it uses less digits than its factorization.

2112173512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34416 (or 34412 counting only the distinct ones).

The product of its digits is 840, while the sum is 25.

The square root of 2112173512 is about 45958.3889186729. The cubic root of 2112173512 is about 1283.0488664968.

Adding to 2112173512 its reverse (2153712112), we get a palindrome (4265885624).

The spelling of 2112173512 in words is "two billion, one hundred twelve million, one hundred seventy-three thousand, five hundred twelve".