1212012122020 has 48 divisors (see below), whose sum is σ = 2937629415168. Its totient is φ = 411432681600.

The previous prime is 1212012122003. The next prime is 1212012122047. The reversal of 1212012122020 is 202212102121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212012121985 and 1212012122003.

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 15 ways as a sum of consecutive naturals, for example, 42843432 + ... + 42871711.

It is an arithmetic number, because the mean of its divisors is an integer number (61200612816).

Almost surely, 2^{1212012122020} is an apocalyptic number.

1212012122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212012122020 is an abundant number, since it is smaller than the sum of its proper divisors (1725617293148).

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

1212012122020 is a wasteful number, since it uses less digits than its factorization.

1212012122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85715260 (or 85715258 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212012122020 its reverse (202212102121), we get a palindrome (1414224224141).

The spelling of 1212012122020 in words is "one trillion, two hundred twelve billion, twelve million, one hundred twenty-two thousand, twenty".