2121430203 has 32 divisors (see below), whose sum is σ = 3167078400. Its totient is φ = 1403438400.

The previous prime is 2121430193. The next prime is 2121430217. The reversal of 2121430203 is 3020341212.

2121430203 is a `hidden beast` number, since 212 + 1 + 430 + 20 + 3 = 666.

It is not a de Polignac number, because 2121430203 - 2³⁰ = 1047688379 is a prime.

It is a super-2 number, since 2×2121430203² = 9000932212401242418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121430603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3361698 + ... + 3362328.

It is an arithmetic number, because the mean of its divisors is an integer number (98971200).

Almost surely, 2^2121430203 is an apocalyptic number.

2121430203 is a deficient number, since it is larger than the sum of its proper divisors (1045648197).

2121430203 is a wasteful number, since it uses less digits than its factorization.

2121430203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2121430203 is about 46058.9861264878. The cubic root of 2121430203 is about 1284.9204739148.

Adding to 2121430203 its reverse (3020341212), we get a palindrome (5141771415).

The spelling of 2121430203 in words is "two billion, one hundred twenty-one million, four hundred thirty thousand, two hundred three".