129201016 has 16 divisors (see below), whose sum is σ = 276859440. Its totient is φ = 55371840.

The previous prime is 129201011. The next prime is 129201019. The reversal of 129201016 is 610102921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129201011) 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, 1153525 + ... + 1153636.

It is an arithmetic number, because the mean of its divisors is an integer number (17303715).

Almost surely, 2^129201016 is an apocalyptic number.

It is an amenable number.

129201016 is an abundant number, since it is smaller than the sum of its proper divisors (147658424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129201016 is a wasteful number, since it uses less digits than its factorization.

129201016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307174 (or 2307170 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 129201016 is about 11366.6624828927. The cubic root of 129201016 is about 505.5397503215.

Adding to 129201016 its reverse (610102921), we get a palindrome (739303937).

The spelling of 129201016 in words is "one hundred twenty-nine million, two hundred one thousand, sixteen".