2121616203 has 32 divisors (see below), whose sum is σ = 3293154816. Its totient is φ = 1189963008.

The previous prime is 2121616199. The next prime is 2121616213. The reversal of 2121616203 is 3026161212.

It is not a de Polignac number, because 2121616203 - 2² = 2121616199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121616213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269775 + ... + 277527.

It is an arithmetic number, because the mean of its divisors is an integer number (102911088).

Almost surely, 2^2121616203 is an apocalyptic number.

2121616203 is a deficient number, since it is larger than the sum of its proper divisors (1171538613).

2121616203 is a wasteful number, since it uses less digits than its factorization.

2121616203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8003.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2121616203 is about 46061.0052321918. The cubic root of 2121616203 is about 1284.9580253464.

Adding to 2121616203 its reverse (3026161212), we get a palindrome (5147777415).

The spelling of 2121616203 in words is "two billion, one hundred twenty-one million, six hundred sixteen thousand, two hundred three".