12120012102020 has 24 divisors (see below), whose sum is σ = 25455663270744. Its totient is φ = 4847311915776.

The previous prime is 12120012101909. The next prime is 12120012102041. The reversal of 12120012102020 is 2020121002121.

It can be written as a sum of positive squares in 4 ways, for example, as 2095088343364 + 10024923758656 = 1447442^2 + 3166216^2 .

It is a super-2 number, since 2×12120012102020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12120012101986 and 12120012102004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43164377 + ... + 43444256.

It is an arithmetic number, because the mean of its divisors is an integer number (1060652636281).

Almost surely, 2^{12120012102020} is an apocalyptic number.

12120012102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120012102020 is an abundant number, since it is smaller than the sum of its proper divisors (13335651168724).

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

12120012102020 is a wasteful number, since it uses less digits than its factorization.

12120012102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86615639 (or 86615637 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12120012102020 its reverse (2020121002121), we get a palindrome (14140133104141).

The spelling of 12120012102020 in words is "twelve trillion, one hundred twenty billion, twelve million, one hundred two thousand, twenty".