21202100122103 has 2 divisors, whose sum is σ = 21202100122104. Its totient is φ = 21202100122102.

The previous prime is 21202100122081. The next prime is 21202100122111. The reversal of 21202100122103 is 30122100120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21202100122103 - 2⁶ = 21202100122039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202100124103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601050061051 + 10601050061052.

It is an arithmetic number, because the mean of its divisors is an integer number (10601050061052).

Almost surely, 2^{21202100122103} is an apocalyptic number.

21202100122103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202100122103 is an equidigital number, since it uses as much as digits as its factorization.

21202100122103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21202100122103 its reverse (30122100120212), we get a palindrome (51324200242315).

The spelling of 21202100122103 in words is "twenty-one trillion, two hundred two billion, one hundred million, one hundred twenty-two thousand, one hundred three".