12011001202120 has 64 divisors (see below), whose sum is σ = 27161973149040. Its totient is φ = 4780057497600.

The previous prime is 12011001202097. The next prime is 12011001202159. The reversal of 12011001202120 is 2120210011021.

It can be written as a sum of positive squares in 8 ways, for example, as 8014368493156 + 3996632708964 = 2830966^2 + 1999158^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12011001202120.

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, 6621324 + ... + 8237956.

Almost surely, 2^{12011001202120} is an apocalyptic number.

12011001202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011001202120 is an abundant number, since it is smaller than the sum of its proper divisors (15150971946920).

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

12011001202120 is a wasteful number, since it uses less digits than its factorization.

12011001202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617586 (or 1617582 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12011001202120 its reverse (2120210011021), we get a palindrome (14131211213141).

The spelling of 12011001202120 in words is "twelve trillion, eleven billion, one million, two hundred two thousand, one hundred twenty".