21232303211 has 8 divisors (see below), whose sum is σ = 24267809280. Its totient is φ = 18197377128.

The previous prime is 21232303121. The next prime is 21232303231. The reversal of 21232303211 is 11230323212.

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

It is not a de Polignac number, because 21232303211 - 2³⁰ = 20158561387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232303231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63491 + ... + 215628.

It is an arithmetic number, because the mean of its divisors is an integer number (3033476160).

Almost surely, 2^21232303211 is an apocalyptic number.

21232303211 is a deficient number, since it is larger than the sum of its proper divisors (3035506069).

21232303211 is a wasteful number, since it uses less digits than its factorization.

21232303211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289993.

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

Adding to 21232303211 its reverse (11230323212), we get a palindrome (32462626423).

It can be divided in two parts, 21 and 232303211, that added together give a palindrome (232303232).

The spelling of 21232303211 in words is "twenty-one billion, two hundred thirty-two million, three hundred three thousand, two hundred eleven".