12111211010120 has 32 divisors (see below), whose sum is σ = 27253458444600. Its totient is φ = 4843909529088.

The previous prime is 12111211010083. The next prime is 12111211010153. The reversal of 12111211010120 is 2101011211121.

It can be written as a sum of positive squares in 4 ways, for example, as 5884379499076 + 6226831511044 = 2425774^2 + 2495362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12111211010095 and 12111211010104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17623469 + ... + 18297788.

Almost surely, 2^{12111211010120} is an apocalyptic number.

12111211010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111211010120 is an abundant number, since it is smaller than the sum of its proper divisors (15142247434480).

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

12111211010120 is a wasteful number, since it uses less digits than its factorization.

12111211010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35929697 (or 35929693 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12111211010120 its reverse (2101011211121), we get a palindrome (14212222221241).

The spelling of 12111211010120 in words is "twelve trillion, one hundred eleven billion, two hundred eleven million, ten thousand, one hundred twenty".