2120111903 has 32 divisors (see below), whose sum is σ = 2841484800. Its totient is φ = 1534329216.

The previous prime is 2120111899. The next prime is 2120111921. The reversal of 2120111903 is 3091110212.

It is not a de Polignac number, because 2120111903 - 2² = 2120111899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120111923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29000 + ... + 71282.

It is an arithmetic number, because the mean of its divisors is an integer number (88796400).

Almost surely, 2^2120111903 is an apocalyptic number.

2120111903 is a deficient number, since it is larger than the sum of its proper divisors (721372897).

2120111903 is a wasteful number, since it uses less digits than its factorization.

2120111903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42351.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 2120111903 is about 46044.6729057771. The cubic root of 2120111903 is about 1284.6542601664.

The spelling of 2120111903 in words is "two billion, one hundred twenty million, one hundred eleven thousand, nine hundred three".