21233111113 has 8 divisors (see below), whose sum is σ = 21608816256. Its totient is φ = 20859535200.

The previous prime is 21233111093. The next prime is 21233111147. The reversal of 21233111113 is 31111133212.

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 21233111113 - 2⁹ = 21233110601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21233111213) 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, 512181 + ... + 552082.

It is an arithmetic number, because the mean of its divisors is an integer number (2701102032).

Almost surely, 2^21233111113 is an apocalyptic number.

It is an amenable number.

21233111113 is a deficient number, since it is larger than the sum of its proper divisors (375705143).

21233111113 is a wasteful number, since it uses less digits than its factorization.

21233111113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064615.

The product of its digits is 108, while the sum is 19.

Adding to 21233111113 its reverse (31111133212), we get a palindrome (52344244325).

The spelling of 21233111113 in words is "twenty-one billion, two hundred thirty-three million, one hundred eleven thousand, one hundred thirteen".