101155129 has 2 divisors, whose sum is σ = 101155130. Its totient is φ = 101155128.

The previous prime is 101155039. The next prime is 101155147. The reversal of 101155129 is 921551101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61653904 + 39501225 = 7852^2 + 6285^2 .

It is a cyclic number.

It is not a de Polignac number, because 101155129 - 2⁹ = 101154617 is a prime.

It is not a weakly prime, because it can be changed into another prime (101155169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50577564 + 50577565.

It is an arithmetic number, because the mean of its divisors is an integer number (50577565).

Almost surely, 2^101155129 is an apocalyptic number.

It is an amenable number.

101155129 is a deficient number, since it is larger than the sum of its proper divisors (1).

101155129 is an equidigital number, since it uses as much as digits as its factorization.

101155129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 25.

The square root of 101155129 is about 10057.5906160472. The cubic root of 101155129 is about 465.9392569428.

The spelling of 101155129 in words is "one hundred one million, one hundred fifty-five thousand, one hundred twenty-nine".