21302210323133 has 4 divisors (see below), whose sum is σ = 21464822615808. Its totient is φ = 21139598030460.

The previous prime is 21302210323117. The next prime is 21302210323241. The reversal of 21302210323133 is 33132301220312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21302210323133 - 2⁴ = 21302210323117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302216323133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81306146141 + ... + 81306146402.

It is an arithmetic number, because the mean of its divisors is an integer number (5366205653952).

Almost surely, 2^{21302210323133} is an apocalyptic number.

It is an amenable number.

21302210323133 is a deficient number, since it is larger than the sum of its proper divisors (162612292675).

21302210323133 is a wasteful number, since it uses less digits than its factorization.

21302210323133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162612292674.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21302210323133 its reverse (33132301220312), we get a palindrome (54434511543445).

The spelling of 21302210323133 in words is "twenty-one trillion, three hundred two billion, two hundred ten million, three hundred twenty-three thousand, one hundred thirty-three".