129211059 has 4 divisors (see below), whose sum is σ = 172281416. Its totient is φ = 86140704.

The previous prime is 129211051. The next prime is 129211109. The reversal of 129211059 is 950112921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 950112921 = 3 ⋅316704307.

It is not a de Polignac number, because 129211059 - 2³ = 129211051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129211051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21535174 + ... + 21535179.

It is an arithmetic number, because the mean of its divisors is an integer number (43070354).

Almost surely, 2^129211059 is an apocalyptic number.

129211059 is a deficient number, since it is larger than the sum of its proper divisors (43070357).

129211059 is an equidigital number, since it uses as much as digits as its factorization.

129211059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43070356.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 129211059 is about 11367.1042486642. The cubic root of 129211059 is about 505.5528487844.

The spelling of 129211059 in words is "one hundred twenty-nine million, two hundred eleven thousand, fifty-nine".