210129103 has 2 divisors, whose sum is σ = 210129104. Its totient is φ = 210129102.

The previous prime is 210129097. The next prime is 210129119. The reversal of 210129103 is 301921012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210129103 - 2⁵ = 210129071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210121103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105064551 + 105064552.

It is an arithmetic number, because the mean of its divisors is an integer number (105064552).

Almost surely, 2^210129103 is an apocalyptic number.

210129103 is a deficient number, since it is larger than the sum of its proper divisors (1).

210129103 is an equidigital number, since it uses as much as digits as its factorization.

210129103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 210129103 is about 14495.8305384686. The cubic root of 210129103 is about 594.5139763802.

The spelling of 210129103 in words is "two hundred ten million, one hundred twenty-nine thousand, one hundred three".