2112120203 has 4 divisors (see below), whose sum is σ = 2118387960. Its totient is φ = 2105852448.

The previous prime is 2112120191. The next prime is 2112120223. The reversal of 2112120203 is 3020212112.

It is a happy number.

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 2112120203 - 2¹⁰ = 2112119179 is a prime.

It is a super-5 number, since 5×2112120203⁵ (a number of 48 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112120223) 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, 3133373 + ... + 3134046.

It is an arithmetic number, because the mean of its divisors is an integer number (529596990).

Almost surely, 2^2112120203 is an apocalyptic number.

2112120203 is a deficient number, since it is larger than the sum of its proper divisors (6267757).

2112120203 is an equidigital number, since it uses as much as digits as its factorization.

2112120203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267756.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2112120203 is about 45957.8089447267. The cubic root of 2112120203 is about 1283.0380721457.

Adding to 2112120203 its reverse (3020212112), we get a palindrome (5132332315).

The spelling of 2112120203 in words is "two billion, one hundred twelve million, one hundred twenty thousand, two hundred three".