21202132223 has 8 divisors (see below), whose sum is σ = 21250072896. Its totient is φ = 21154240800.

The previous prime is 21202132213. The next prime is 21202132271. The reversal of 21202132223 is 32223120212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21202132223 - 2¹⁰ = 21202131199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21202132195 and 21202132204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202132213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929333 + ... + 951873.

It is an arithmetic number, because the mean of its divisors is an integer number (2656259112).

Almost surely, 2^21202132223 is an apocalyptic number.

21202132223 is a deficient number, since it is larger than the sum of its proper divisors (47940673).

21202132223 is a wasteful number, since it uses less digits than its factorization.

21202132223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24625.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21202132223 its reverse (32223120212), we get a palindrome (53425252435).

The spelling of 21202132223 in words is "twenty-one billion, two hundred two million, one hundred thirty-two thousand, two hundred twenty-three".