21112132233 has 8 divisors (see below), whose sum is σ = 28151616096. Its totient is φ = 14073701600.

The previous prime is 21112132231. The next prime is 21112132259. The reversal of 21112132233 is 33223121112.

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 21112132233 - 2¹ = 21112132231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112132231) 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, 215283 + ... + 297608.

It is an arithmetic number, because the mean of its divisors is an integer number (3518952012).

Almost surely, 2^21112132233 is an apocalyptic number.

It is an amenable number.

21112132233 is a deficient number, since it is larger than the sum of its proper divisors (7039483863).

21112132233 is a wasteful number, since it uses less digits than its factorization.

21112132233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526615.

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

Adding to 21112132233 its reverse (33223121112), we get a palindrome (54335253345).

The spelling of 21112132233 in words is "twenty-one billion, one hundred twelve million, one hundred thirty-two thousand, two hundred thirty-three".