21232414423111 has 4 divisors (see below), whose sum is σ = 21232433082672. Its totient is φ = 21232395763552.

The previous prime is 21232414423091. The next prime is 21232414423141. The reversal of 21232414423111 is 11132441423212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21232414423111 - 2⁵ = 21232414423079 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 (21232414423141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7503835 + ... + 9938428.

It is an arithmetic number, because the mean of its divisors is an integer number (5308108270668).

Almost surely, 2^{21232414423111} is an apocalyptic number.

21232414423111 is a deficient number, since it is larger than the sum of its proper divisors (18659561).

21232414423111 is a wasteful number, since it uses less digits than its factorization.

21232414423111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18659560.

The product of its digits is 9216, while the sum is 31.

Adding to 21232414423111 its reverse (11132441423212), we get a palindrome (32364855846323).

The spelling of 21232414423111 in words is "twenty-one trillion, two hundred thirty-two billion, four hundred fourteen million, four hundred twenty-three thousand, one hundred eleven".