21033300227 has 2 divisors, whose sum is σ = 21033300228. Its totient is φ = 21033300226.

The previous prime is 21033300221. The next prime is 21033300241. The reversal of 21033300227 is 72200333012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21033300227 - 2⁸ = 21033299971 is a prime.

It is a super-4 number, since 4×21033300227⁴ (a number of 42 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (21033300221) 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 as a sum of consecutive naturals, namely, 10516650113 + 10516650114.

It is an arithmetic number, because the mean of its divisors is an integer number (10516650114).

Almost surely, 2^21033300227 is an apocalyptic number.

21033300227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21033300227 is an equidigital number, since it uses as much as digits as its factorization.

21033300227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

Adding to 21033300227 its reverse (72200333012), we get a palindrome (93233633239).

The spelling of 21033300227 in words is "twenty-one billion, thirty-three million, three hundred thousand, two hundred twenty-seven".