21003300223 has 2 divisors, whose sum is σ = 21003300224. Its totient is φ = 21003300222.

The previous prime is 21003300179. The next prime is 21003300229. The reversal of 21003300223 is 32200330012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21003300223 - 2¹³ = 21003292031 is a prime.

It is a super-2 number, since 2×21003300223² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21003300197 and 21003300206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21003300229) 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 as a sum of consecutive naturals, namely, 10501650111 + 10501650112.

It is an arithmetic number, because the mean of its divisors is an integer number (10501650112).

Almost surely, 2^21003300223 is an apocalyptic number.

21003300223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21003300223 is an equidigital number, since it uses as much as digits as its factorization.

21003300223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 21003300223 its reverse (32200330012), we get a palindrome (53203630235).

The spelling of 21003300223 in words is "twenty-one billion, three million, three hundred thousand, two hundred twenty-three".