129030011 has 4 divisors (see below), whose sum is σ = 140760024. Its totient is φ = 117300000.

The previous prime is 129030001. The next prime is 129030047. The reversal of 129030011 is 110030921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129030011 - 2¹⁰ = 129028987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129030001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5864990 + ... + 5865011.

It is an arithmetic number, because the mean of its divisors is an integer number (35190006).

Almost surely, 2^129030011 is an apocalyptic number.

129030011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

129030011 is a deficient number, since it is larger than the sum of its proper divisors (11730013).

129030011 is a wasteful number, since it uses less digits than its factorization.

129030011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11730012.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 129030011 is about 11359.1377753771. The cubic root of 129030011 is about 505.3166148380.

Adding to 129030011 its reverse (110030921), we get a palindrome (239060932).

The spelling of 129030011 in words is "one hundred twenty-nine million, thirty thousand, eleven".