21110352233 has 8 divisors (see below), whose sum is σ = 21142921800. Its totient is φ = 21077808768.

The previous prime is 21110352229. The next prime is 21110352253. The reversal of 21110352233 is 33225301112.

It can be written as a sum of positive squares in 4 ways, for example, as 6487980304 + 14622371929 = 80548^2 + 120923^2 .

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 21110352233 - 2² = 21110352229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110352199 and 21110352208.

It is not an unprimeable number, because it can be changed into a prime (21110352203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2104133 + ... + 2114141.

It is an arithmetic number, because the mean of its divisors is an integer number (2642865225).

Almost surely, 2^21110352233 is an apocalyptic number.

It is an amenable number.

21110352233 is a deficient number, since it is larger than the sum of its proper divisors (32569567).

21110352233 is a wasteful number, since it uses less digits than its factorization.

21110352233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13051.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 21110352233 its reverse (33225301112), we get a palindrome (54335653345).

The spelling of 21110352233 in words is "twenty-one billion, one hundred ten million, three hundred fifty-two thousand, two hundred thirty-three".