2112001123 has 4 divisors (see below), whose sum is σ = 2122944328. Its totient is φ = 2101057920.

The previous prime is 2112001121. The next prime is 2112001141. The reversal of 2112001123 is 3211002112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2112001123 - 2¹ = 2112001121 is a prime.

It is a super-2 number, since 2×2112001123² = 8921097487106522258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112001121) 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 3 ways as a sum of consecutive naturals, for example, 5471313 + ... + 5471698.

It is an arithmetic number, because the mean of its divisors is an integer number (530736082).

Almost surely, 2^2112001123 is an apocalyptic number.

2112001123 is a deficient number, since it is larger than the sum of its proper divisors (10943205).

2112001123 is a wasteful number, since it uses less digits than its factorization.

2112001123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10943204.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2112001123 is about 45956.5133903781. The cubic root of 2112001123 is about 1283.0139594011.

Adding to 2112001123 its reverse (3211002112), we get a palindrome (5323003235).

The spelling of 2112001123 in words is "two billion, one hundred twelve million, one thousand, one hundred twenty-three".