2121710403 has 16 divisors (see below), whose sum is σ = 2850843296. Its totient is φ = 1403550720.

The previous prime is 2121710399. The next prime is 2121710413. The reversal of 2121710403 is 3040171212.

It is not a de Polignac number, because 2121710403 - 2² = 2121710399 is a prime.

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 2121710403.

It is not an unprimeable number, because it can be changed into a prime (2121710413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399123 + ... + 404403.

It is an arithmetic number, because the mean of its divisors is an integer number (178177706).

Almost surely, 2^2121710403 is an apocalyptic number.

2121710403 is a deficient number, since it is larger than the sum of its proper divisors (729132893).

2121710403 is a wasteful number, since it uses less digits than its factorization.

2121710403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6294.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 2121710403 is about 46062.0277777694. The cubic root of 2121710403 is about 1284.9770424923.

Adding to 2121710403 its reverse (3040171212), we get a palindrome (5161881615).

The spelling of 2121710403 in words is "two billion, one hundred twenty-one million, seven hundred ten thousand, four hundred three".