101228129 has 8 divisors (see below), whose sum is σ = 107421120. Its totient is φ = 95184496.

The previous prime is 101228117. The next prime is 101228131. The reversal of 101228129 is 921822101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101228129 - 2⁸ = 101227873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101228098 and 101228107.

It is not an unprimeable number, because it can be changed into a prime (101228629) 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 in 7 ways as a sum of consecutive naturals, for example, 35942 + ... + 38655.

It is an arithmetic number, because the mean of its divisors is an integer number (13427640).

Almost surely, 2^101228129 is an apocalyptic number.

It is an amenable number.

101228129 is a deficient number, since it is larger than the sum of its proper divisors (6192991).

101228129 is an equidigital number, since it uses as much as digits as its factorization.

101228129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74679.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 101228129 is about 10061.2190613265. The cubic root of 101228129 is about 466.0513138309.

The spelling of 101228129 in words is "one hundred one million, two hundred twenty-eight thousand, one hundred twenty-nine".