21014304432103 has 2 divisors, whose sum is σ = 21014304432104. Its totient is φ = 21014304432102.

The previous prime is 21014304432091. The next prime is 21014304432169. The reversal of 21014304432103 is 30123440341012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21014304432103 - 2²⁵ = 21014270877671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21014304433103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10507152216051 + 10507152216052.

It is an arithmetic number, because the mean of its divisors is an integer number (10507152216052).

Almost surely, 2^{21014304432103} is an apocalyptic number.

21014304432103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21014304432103 is an equidigital number, since it uses as much as digits as its factorization.

21014304432103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21014304432103 its reverse (30123440341012), we get a palindrome (51137744773115).

The spelling of 21014304432103 in words is "twenty-one trillion, fourteen billion, three hundred four million, four hundred thirty-two thousand, one hundred three".