21302030110233 has 4 divisors (see below), whose sum is σ = 28402706813648. Its totient is φ = 14201353406820.

The previous prime is 21302030110219. The next prime is 21302030110241. The reversal of 21302030110233 is 33201103020312.

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 not a de Polignac number, because 21302030110233 - 2¹⁸ = 21302029848089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302030910233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550338351703 + ... + 3550338351708.

It is an arithmetic number, because the mean of its divisors is an integer number (7100676703412).

Almost surely, 2^{21302030110233} is an apocalyptic number.

It is an amenable number.

21302030110233 is a deficient number, since it is larger than the sum of its proper divisors (7100676703415).

21302030110233 is an equidigital number, since it uses as much as digits as its factorization.

21302030110233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100676703414.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21302030110233 its reverse (33201103020312), we get a palindrome (54503133130545).

The spelling of 21302030110233 in words is "twenty-one trillion, three hundred two billion, thirty million, one hundred ten thousand, two hundred thirty-three".