1212020010020 has 12 divisors (see below), whose sum is σ = 2545242021084. Its totient is φ = 484808004000.

The previous prime is 1212020010001. The next prime is 1212020010043. The reversal of 1212020010020 is 200100202121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 702475307044 + 509544702976 = 838138^2 + 713824^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212020009983 and 1212020010010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30300500231 + ... + 30300500270.

It is an arithmetic number, because the mean of its divisors is an integer number (212103501757).

Almost surely, 2^{1212020010020} is an apocalyptic number.

1212020010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212020010020 is an abundant number, since it is smaller than the sum of its proper divisors (1333222011064).

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

1212020010020 is a wasteful number, since it uses less digits than its factorization.

1212020010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60601000510 (or 60601000508 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1212020010020 its reverse (200100202121), we get a palindrome (1412120212141).

The spelling of 1212020010020 in words is "one trillion, two hundred twelve billion, twenty million, ten thousand, twenty".