129000680212 has 12 divisors (see below), whose sum is σ = 226687918996. Its totient is φ = 64232703360.

The previous prime is 129000680209. The next prime is 129000680261. The reversal of 129000680212 is 212086000921.

It can be written as a sum of positive squares in 2 ways, for example, as 108171263236 + 20829416976 = 328894^2 + 144324^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66908103 + ... + 66910030.

Almost surely, 2^129000680212 is an apocalyptic number.

It is an amenable number.

129000680212 is a deficient number, since it is larger than the sum of its proper divisors (97687238784).

129000680212 is a wasteful number, since it uses less digits than its factorization.

129000680212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133818378 (or 133818376 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 129000680212 in words is "one hundred twenty-nine billion, six hundred eighty thousand, two hundred twelve".