21332163103 has 2 divisors, whose sum is σ = 21332163104. Its totient is φ = 21332163102.

The previous prime is 21332163049. The next prime is 21332163107. The reversal of 21332163103 is 30136123312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21332163103 - 2⁹ = 21332162591 is a prime.

It is a super-2 number, since 2×21332163103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21332163107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666081551 + 10666081552.

It is an arithmetic number, because the mean of its divisors is an integer number (10666081552).

Almost surely, 2^21332163103 is an apocalyptic number.

21332163103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332163103 is an equidigital number, since it uses as much as digits as its factorization.

21332163103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21332163103 its reverse (30136123312), we get a palindrome (51468286415).

The spelling of 21332163103 in words is "twenty-one billion, three hundred thirty-two million, one hundred sixty-three thousand, one hundred three".