2121132303203 has 4 divisors (see below), whose sum is σ = 2144965250520. Its totient is φ = 2097299355888.

The previous prime is 2121132303109. The next prime is 2121132303247. The reversal of 2121132303203 is 3023032311212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121132303203 - 2¹⁶ = 2121132237667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121132309203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11916473525 + ... + 11916473702.

It is an arithmetic number, because the mean of its divisors is an integer number (536241312630).

Almost surely, 2^{2121132303203} is an apocalyptic number.

2121132303203 is a deficient number, since it is larger than the sum of its proper divisors (23832947317).

2121132303203 is an equidigital number, since it uses as much as digits as its factorization.

2121132303203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23832947316.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2121132303203 its reverse (3023032311212), we get a palindrome (5144164614415).

The spelling of 2121132303203 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-two million, three hundred three thousand, two hundred three".