21232201111 has 8 divisors (see below), whose sum is σ = 24381475200. Its totient is φ = 18286106040.

The previous prime is 21232201093. The next prime is 21232201169. The reversal of 21232201111 is 11110223212.

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 21232201111 - 2²⁹ = 20695330199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232261111) 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, 50794531 + ... + 50794948.

It is an arithmetic number, because the mean of its divisors is an integer number (3047684400).

Almost surely, 2^21232201111 is an apocalyptic number.

21232201111 is a deficient number, since it is larger than the sum of its proper divisors (3149274089).

21232201111 is a wasteful number, since it uses less digits than its factorization.

21232201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101589509.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21232201111 its reverse (11110223212), we get a palindrome (32342424323).

The spelling of 21232201111 in words is "twenty-one billion, two hundred thirty-two million, two hundred one thousand, one hundred eleven".