129911020012 has 12 divisors (see below), whose sum is σ = 227417431360. Its totient is φ = 64934611056.

The previous prime is 129911019971. The next prime is 129911020039. The reversal of 129911020012 is 210020119921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5210748 + ... + 5235619.

Almost surely, 2^129911020012 is an apocalyptic number.

It is an amenable number.

129911020012 is a deficient number, since it is larger than the sum of its proper divisors (97506411348).

129911020012 is a wasteful number, since it uses less digits than its factorization.

129911020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10449480 (or 10449478 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

Adding to 129911020012 its reverse (210020119921), we get a palindrome (339931139933).

The spelling of 129911020012 in words is "one hundred twenty-nine billion, nine hundred eleven million, twenty thousand, twelve".