21103223323333 has 4 divisors (see below), whose sum is σ = 21830920679340. Its totient is φ = 20375525967328.

The previous prime is 21103223323309. The next prime is 21103223323349. The reversal of 21103223323333 is 33332332230112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12004270819524 + 9098952503809 = 3464718^2 + 3016447^2 .

It is a cyclic number.

It is not a de Polignac number, because 21103223323333 - 2²¹ = 21103221226181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21103223323295 and 21103223323304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103223323393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363848677960 + ... + 363848678017.

It is an arithmetic number, because the mean of its divisors is an integer number (5457730169835).

Almost surely, 2^{21103223323333} is an apocalyptic number.

It is an amenable number.

21103223323333 is a deficient number, since it is larger than the sum of its proper divisors (727697356007).

21103223323333 is an equidigital number, since it uses as much as digits as its factorization.

21103223323333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727697356006.

The product of its (nonzero) digits is 34992, while the sum is 31.

Adding to 21103223323333 its reverse (33332332230112), we get a palindrome (54435555553445).

The spelling of 21103223323333 in words is "twenty-one trillion, one hundred three billion, two hundred twenty-three million, three hundred twenty-three thousand, three hundred thirty-three".