2101120003 has 2 divisors, whose sum is σ = 2101120004. Its totient is φ = 2101120002.

The previous prime is 2101120001. The next prime is 2101120009. The reversal of 2101120003 is 3000211012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101120003 - 2¹ = 2101120001 is a prime.

Together with 2101120001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2101120001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050560001 + 1050560002.

It is an arithmetic number, because the mean of its divisors is an integer number (1050560002).

Almost surely, 2^2101120003 is an apocalyptic number.

2101120003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101120003 is an equidigital number, since it uses as much as digits as its factorization.

2101120003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2101120003 is about 45837.9755552097. The cubic root of 2101120003 is about 1280.8067836547.

Adding to 2101120003 its reverse (3000211012), we get a palindrome (5101331015).

It can be divided in two parts, 21011 and 20003, that added together give a palindrome (41014).

The spelling of 2101120003 in words is "two billion, one hundred one million, one hundred twenty thousand, three".