2121010003 has 8 divisors (see below), whose sum is σ = 2424884480. Its totient is φ = 1817353800.

The previous prime is 2121009983. The next prime is 2121010007. The reversal of 2121010003 is 3000101212.

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 2121010003 - 2¹³ = 2121001811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121010007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33183 + ... + 73096.

It is an arithmetic number, because the mean of its divisors is an integer number (303110560).

Almost surely, 2^2121010003 is an apocalyptic number.

2121010003 is a deficient number, since it is larger than the sum of its proper divisors (303874477).

2121010003 is a wasteful number, since it uses less digits than its factorization.

2121010003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109137.

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

The square root of 2121010003 is about 46054.4243585782. The cubic root of 2121010003 is about 1284.8356319004.

Adding to 2121010003 its reverse (3000101212), we get a palindrome (5121111215).

It can be divided in two parts, 21210 and 10003, that added together give a palindrome (31213).

The spelling of 2121010003 in words is "two billion, one hundred twenty-one million, ten thousand, three".