21132334205 has 8 divisors (see below), whose sum is σ = 25359727104. Its totient is φ = 16905250000.

The previous prime is 21132334199. The next prime is 21132334241. The reversal of 21132334205 is 50243323112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21132334205 - 2⁴ = 21132334189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118580 + ... + 237330.

It is an arithmetic number, because the mean of its divisors is an integer number (3169965888).

Almost surely, 2^21132334205 is an apocalyptic number.

It is an amenable number.

21132334205 is a deficient number, since it is larger than the sum of its proper divisors (4227392899).

21132334205 is a wasteful number, since it uses less digits than its factorization.

21132334205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154347.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 21132334205 its reverse (50243323112), we get a palindrome (71375657317).

The spelling of 21132334205 in words is "twenty-one billion, one hundred thirty-two million, three hundred thirty-four thousand, two hundred five".