129216048001 has 4 divisors (see below), whose sum is σ = 129217398100. Its totient is φ = 129214697904.

The previous prime is 129216047981. The next prime is 129216048011. The reversal of 129216048001 is 100840612921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100840612921 = 163 ⋅618654067.

It can be written as a sum of positive squares in 2 ways, for example, as 36526854400 + 92689193601 = 191120^2 + 304449^2 .

It is a cyclic number.

It is not a de Polignac number, because 129216048001 - 2¹¹ = 129216045953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129216048011) 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, 519546 + ... + 726883.

It is an arithmetic number, because the mean of its divisors is an integer number (32304349525).

Almost surely, 2^129216048001 is an apocalyptic number.

It is an amenable number.

129216048001 is a deficient number, since it is larger than the sum of its proper divisors (1350099).

129216048001 is a wasteful number, since it uses less digits than its factorization.

129216048001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350098.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 129216048001 in words is "one hundred twenty-nine billion, two hundred sixteen million, forty-eight thousand, one".