21013202002103 has 2 divisors, whose sum is σ = 21013202002104. Its totient is φ = 21013202002102.

The previous prime is 21013202002099. The next prime is 21013202002129. The reversal of 21013202002103 is 30120020231012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21013202002103 - 2² = 21013202002099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21013222002103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506601001051 + 10506601001052.

It is an arithmetic number, because the mean of its divisors is an integer number (10506601001052).

Almost surely, 2^{21013202002103} is an apocalyptic number.

21013202002103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21013202002103 is an equidigital number, since it uses as much as digits as its factorization.

21013202002103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21013202002103 its reverse (30120020231012), we get a palindrome (51133222233115).

The spelling of 21013202002103 in words is "twenty-one trillion, thirteen billion, two hundred two million, two thousand, one hundred three".