128712459122 has 16 divisors (see below), whose sum is σ = 207952519320. Its totient is φ = 59396495232.

The previous prime is 128712459097. The next prime is 128712459133. The reversal of 128712459122 is 221954217821.

128712459122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 47527924081 + 81184535041 = 218009^2 + 284929^2 .

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 7 ways as a sum of consecutive naturals, for example, 214097 + ... + 550692.

Almost surely, 2^128712459122 is an apocalyptic number.

128712459122 is a deficient number, since it is larger than the sum of its proper divisors (79240060198).

128712459122 is a wasteful number, since it uses less digits than its factorization.

128712459122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771277.

The product of its digits is 161280, while the sum is 44.

The spelling of 128712459122 in words is "one hundred twenty-eight billion, seven hundred twelve million, four hundred fifty-nine thousand, one hundred twenty-two".