21232321113 has 8 divisors (see below), whose sum is σ = 28318356000. Its totient is φ = 14150583488.

The previous prime is 21232321093. The next prime is 21232321141. The reversal of 21232321113 is 31112323212.

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 21232321113 - 2¹³ = 21232312921 is a prime.

It is a super-2 number, since 2×21232321113² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21232321113.

It is not an unprimeable number, because it can be changed into a prime (21232321813) 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, 1062768 + ... + 1082561.

It is an arithmetic number, because the mean of its divisors is an integer number (3539794500).

Almost surely, 2^21232321113 is an apocalyptic number.

It is an amenable number.

21232321113 is a deficient number, since it is larger than the sum of its proper divisors (7086034887).

21232321113 is a wasteful number, since it uses less digits than its factorization.

21232321113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148631.

The product of its digits is 432, while the sum is 21.

Adding to 21232321113 its reverse (31112323212), we get a palindrome (52344644325).

The spelling of 21232321113 in words is "twenty-one billion, two hundred thirty-two million, three hundred twenty-one thousand, one hundred thirteen".