21112331233 has 8 divisors (see below), whose sum is σ = 24906713600. Its totient is φ = 17512532640.

The previous prime is 21112331147. The next prime is 21112331291. The reversal of 21112331233 is 33213321112.

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 21112331233 - 2¹³ = 21112323041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112331033) 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, 48645708 + ... + 48646141.

It is an arithmetic number, because the mean of its divisors is an integer number (3113339200).

Almost surely, 2^21112331233 is an apocalyptic number.

It is an amenable number.

21112331233 is a deficient number, since it is larger than the sum of its proper divisors (3794382367).

21112331233 is an equidigital number, since it uses as much as digits as its factorization.

21112331233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97291887.

The product of its digits is 648, while the sum is 22.

Adding to 21112331233 its reverse (33213321112), we get a palindrome (54325652345).

The spelling of 21112331233 in words is "twenty-one billion, one hundred twelve million, three hundred thirty-one thousand, two hundred thirty-three".