21331040230111 has 4 divisors (see below), whose sum is σ = 21331221053832. Its totient is φ = 21330859406392.

The previous prime is 21331040229977. The next prime is 21331040230133. The reversal of 21331040230111 is 11103204013312.

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 21331040230111 - 2²⁹ = 21330503359199 is a prime.

It is a super-2 number, since 2×21331040230111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331040230151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90234796 + ... + 90470881.

It is an arithmetic number, because the mean of its divisors is an integer number (5332805263458).

Almost surely, 2^{21331040230111} is an apocalyptic number.

21331040230111 is a deficient number, since it is larger than the sum of its proper divisors (180823721).

21331040230111 is a wasteful number, since it uses less digits than its factorization.

21331040230111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180823720.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21331040230111 its reverse (11103204013312), we get a palindrome (32434244243423).

The spelling of 21331040230111 in words is "twenty-one trillion, three hundred thirty-one billion, forty million, two hundred thirty thousand, one hundred eleven".