2121102003 has 8 divisors (see below), whose sum is σ = 2829880768. Its totient is φ = 1413195624.

The previous prime is 2121102001. The next prime is 2121102041. The reversal of 2121102003 is 3002011212.

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

It is not a de Polignac number, because 2121102003 - 2¹ = 2121102001 is a prime.

It is a super-2 number, since 2×2121102003² = 8998147414261224018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121102003.

It is not an unprimeable number, because it can be changed into a prime (2121102001) 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, 212401 + ... + 222162.

It is an arithmetic number, because the mean of its divisors is an integer number (353735096).

Almost surely, 2^2121102003 is an apocalyptic number.

2121102003 is a deficient number, since it is larger than the sum of its proper divisors (708778765).

2121102003 is a wasteful number, since it uses less digits than its factorization.

2121102003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436193.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2121102003 is about 46055.4231660073. The cubic root of 2121102003 is about 1284.8542084542.

Adding to 2121102003 its reverse (3002011212), we get a palindrome (5123113215).

The spelling of 2121102003 in words is "two billion, one hundred twenty-one million, one hundred two thousand, three".