2123012112 has 40 divisors (see below), whose sum is σ = 5906330304. Its totient is φ = 653234304.

The previous prime is 2123012107. The next prime is 2123012119. The reversal of 2123012112 is 2112103212.

It is a junction number, because it is equal to n+sod(n) for n = 2123012091 and 2123012100.

It is not an unprimeable number, because it can be changed into a prime (2123012119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1700508 + ... + 1701755.

Almost surely, 2^2123012112 is an apocalyptic number.

It is an amenable number.

2123012112 is an abundant number, since it is smaller than the sum of its proper divisors (3783318192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123012112 is a wasteful number, since it uses less digits than its factorization.

2123012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402287 (or 3402281 counting only the distinct ones).

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

The square root of 2123012112 is about 46076.1555687972. The cubic root of 2123012112 is about 1285.2397745825.

Adding to 2123012112 its reverse (2112103212), we get a palindrome (4235115324).

The spelling of 2123012112 in words is "two billion, one hundred twenty-three million, twelve thousand, one hundred twelve".