201100129 has 2 divisors, whose sum is σ = 201100130. Its totient is φ = 201100128.

The previous prime is 201100117. The next prime is 201100147. The reversal of 201100129 is 921001102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191767104 + 9333025 = 13848^2 + 3055^2 .

It is a cyclic number.

It is not a de Polignac number, because 201100129 - 2⁷ = 201100001 is a prime.

It is not a weakly prime, because it can be changed into another prime (201100189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550064 + 100550065.

It is an arithmetic number, because the mean of its divisors is an integer number (100550065).

Almost surely, 2^201100129 is an apocalyptic number.

It is an amenable number.

201100129 is a deficient number, since it is larger than the sum of its proper divisors (1).

201100129 is an equidigital number, since it uses as much as digits as its factorization.

201100129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 201100129 is about 14180.9777166456. The cubic root of 201100129 is about 585.8738531481.

The spelling of 201100129 in words is "two hundred one million, one hundred thousand, one hundred twenty-nine".