21103301231233 has 8 divisors (see below), whose sum is σ = 22726901068200. Its totient is φ = 19479739819008.

The previous prime is 21103301231231. The next prime is 21103301231239. The reversal of 21103301231233 is 33213210330112.

It can be written as a sum of positive squares in 4 ways, for example, as 859573745424 + 20243727485809 = 927132^2 + 4499303^2 .

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 21103301231233 - 2¹ = 21103301231231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21103301231198 and 21103301231207.

It is not an unprimeable number, because it can be changed into a prime (21103301231231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8460448 + ... + 10667041.

It is an arithmetic number, because the mean of its divisors is an integer number (2840862633525).

Almost surely, 2^{21103301231233} is an apocalyptic number.

It is an amenable number.

21103301231233 is a deficient number, since it is larger than the sum of its proper divisors (1623599836967).

21103301231233 is a wasteful number, since it uses less digits than its factorization.

21103301231233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19212371.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21103301231233 its reverse (33213210330112), we get a palindrome (54316511561345).

The spelling of 21103301231233 in words is "twenty-one trillion, one hundred three billion, three hundred one million, two hundred thirty-one thousand, two hundred thirty-three".