2121201103 has 4 divisors (see below), whose sum is σ = 2424229840. Its totient is φ = 1818172368.

The previous prime is 2121201073. The next prime is 2121201119. The reversal of 2121201103 is 3011021212.

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 2121201103 - 2¹³ = 2121192911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121201193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151514358 + ... + 151514371.

It is an arithmetic number, because the mean of its divisors is an integer number (606057460).

Almost surely, 2^2121201103 is an apocalyptic number.

2121201103 is a deficient number, since it is larger than the sum of its proper divisors (303028737).

2121201103 is an equidigital number, since it uses as much as digits as its factorization.

2121201103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303028736.

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

The square root of 2121201103 is about 46056.4990310814. The cubic root of 2121201103 is about 1284.8742180324.

Adding to 2121201103 its reverse (3011021212), we get a palindrome (5132222315).

The spelling of 2121201103 in words is "two billion, one hundred twenty-one million, two hundred one thousand, one hundred three".