21034413404103 has 16 divisors (see below), whose sum is σ = 30597572393856. Its totient is φ = 12747270174240.

The previous prime is 21034413404099. The next prime is 21034413404149. The reversal of 21034413404103 is 30140431443012.

It is not a de Polignac number, because 21034413404103 - 2² = 21034413404099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034413404803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20981800 + ... + 21961437.

It is an arithmetic number, because the mean of its divisors is an integer number (1912348274616).

Almost surely, 2^{21034413404103} is an apocalyptic number.

21034413404103 is a deficient number, since it is larger than the sum of its proper divisors (9563158989753).

21034413404103 is a wasteful number, since it uses less digits than its factorization.

21034413404103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42958094.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 21034413404103 its reverse (30140431443012), we get a palindrome (51174844847115).

The spelling of 21034413404103 in words is "twenty-one trillion, thirty-four billion, four hundred thirteen million, four hundred four thousand, one hundred three".