21132213203 has 24 divisors (see below), whose sum is σ = 22140471600. Its totient is φ = 20167975296.

The previous prime is 21132213199. The next prime is 21132213209. The reversal of 21132213203 is 30231223112.

It is not a de Polignac number, because 21132213203 - 2² = 21132213199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132213209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34473125 + ... + 34473737.

It is an arithmetic number, because the mean of its divisors is an integer number (922519650).

Almost surely, 2^21132213203 is an apocalyptic number.

21132213203 is a deficient number, since it is larger than the sum of its proper divisors (1008258397).

21132213203 is a wasteful number, since it uses less digits than its factorization.

21132213203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21132213203 its reverse (30231223112), we get a palindrome (51363436315).

Subtracting 21132213203 from its reverse (30231223112), we obtain a palindrome (9099009909).

The spelling of 21132213203 in words is "twenty-one billion, one hundred thirty-two million, two hundred thirteen thousand, two hundred three".