21112201302103 has 16 divisors (see below), whose sum is σ = 21424996454400. Its totient is φ = 20800556824320.

The previous prime is 21112201302091. The next prime is 21112201302139. The reversal of 21112201302103 is 30120310221112.

It is a cyclic number.

It is not a de Polignac number, because 21112201302103 - 2⁹ = 21112201301591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112201308103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311543938 + ... + 311611696.

It is an arithmetic number, because the mean of its divisors is an integer number (1339062278400).

Almost surely, 2^{21112201302103} is an apocalyptic number.

21112201302103 is a deficient number, since it is larger than the sum of its proper divisors (312795152297).

21112201302103 is an equidigital number, since it uses as much as digits as its factorization.

21112201302103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76182.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21112201302103 its reverse (30120310221112), we get a palindrome (51232511523215).

The spelling of 21112201302103 in words is "twenty-one trillion, one hundred twelve billion, two hundred one million, three hundred two thousand, one hundred three".