2121003103 has 8 divisors (see below), whose sum is σ = 2174061456. Its totient is φ = 2068008000.

The previous prime is 2121003097. The next prime is 2121003149. The reversal of 2121003103 is 3013001212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121003103 - 2⁹ = 2121002591 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 (2121003173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56128 + ... + 85978.

It is an arithmetic number, because the mean of its divisors is an integer number (271757682).

Almost surely, 2^2121003103 is an apocalyptic number.

2121003103 is a deficient number, since it is larger than the sum of its proper divisors (53058353).

2121003103 is a wasteful number, since it uses less digits than its factorization.

2121003103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31625.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2121003103 is about 46054.3494471478. The cubic root of 2121003103 is about 1284.8342386372.

Adding to 2121003103 its reverse (3013001212), we get a palindrome (5134004315).

The spelling of 2121003103 in words is "two billion, one hundred twenty-one million, three thousand, one hundred three".