21132102203 has 4 divisors (see below), whose sum is σ = 21386705928. Its totient is φ = 20877498480.

The previous prime is 21132102197. The next prime is 21132102217. The reversal of 21132102203 is 30220123112.

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 21132102203 - 2²⁰ = 21131053627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132102293) 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, 127301738 + ... + 127301903.

It is an arithmetic number, because the mean of its divisors is an integer number (5346676482).

Almost surely, 2^21132102203 is an apocalyptic number.

21132102203 is a deficient number, since it is larger than the sum of its proper divisors (254603725).

21132102203 is an equidigital number, since it uses as much as digits as its factorization.

21132102203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254603724.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21132102203 its reverse (30220123112), we get a palindrome (51352225315).

The spelling of 21132102203 in words is "twenty-one billion, one hundred thirty-two million, one hundred two thousand, two hundred three".