21300012229 has 2 divisors, whose sum is σ = 21300012230. Its totient is φ = 21300012228.

The previous prime is 21300012127. The next prime is 21300012241. The reversal of 21300012229 is 92221000312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20190989025 + 1109023204 = 142095^2 + 33302^2 .

It is a cyclic number.

It is not a de Polignac number, because 21300012229 - 2¹¹ = 21300010181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21300012029) 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, 10650006114 + 10650006115.

It is an arithmetic number, because the mean of its divisors is an integer number (10650006115).

Almost surely, 2^21300012229 is an apocalyptic number.

It is an amenable number.

21300012229 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300012229 is an equidigital number, since it uses as much as digits as its factorization.

21300012229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 21300012229 in words is "twenty-one billion, three hundred million, twelve thousand, two hundred twenty-nine".