21232352211 has 8 divisors (see below), whose sum is σ = 32354060544. Its totient is φ = 12132772680.

The previous prime is 21232352203. The next prime is 21232352221. The reversal of 21232352211 is 11225323212.

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

It is not a de Polignac number, because 21232352211 - 2³ = 21232352203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21232352221) 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, 505532175 + ... + 505532216.

It is an arithmetic number, because the mean of its divisors is an integer number (4044257568).

Almost surely, 2^21232352211 is an apocalyptic number.

21232352211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21232352211 is a deficient number, since it is larger than the sum of its proper divisors (11121708333).

21232352211 is a wasteful number, since it uses less digits than its factorization.

21232352211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011064401.

The product of its digits is 1440, while the sum is 24.

Adding to 21232352211 its reverse (11225323212), we get a palindrome (32457675423).

The spelling of 21232352211 in words is "twenty-one billion, two hundred thirty-two million, three hundred fifty-two thousand, two hundred eleven".