12120010121000 has 64 divisors (see below), whose sum is σ = 28679484834000. Its totient is φ = 4793532057600.

The previous prime is 12120010120997. The next prime is 12120010121017. The reversal of 12120010121000 is 12101002121.

It can be written as a sum of positive squares in 8 ways, for example, as 1119630631876 + 11000379489124 = 1058126^2 + 3316682^2 .

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 15 ways as a sum of consecutive naturals, for example, 68000945 + ... + 68178944.

Almost surely, 2^{12120010121000} is an apocalyptic number.

12120010121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120010121000 is an abundant number, since it is smaller than the sum of its proper divisors (16559474713000).

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

12120010121000 is a wasteful number, since it uses less digits than its factorization.

12120010121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136179999 (or 136179985 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12120010121000 its reverse (12101002121), we get a palindrome (12132111123121).

The spelling of 12120010121000 in words is "twelve trillion, one hundred twenty billion, ten million, one hundred twenty-one thousand".