1212212112020 has 96 divisors (see below), whose sum is σ = 3157772771328. Its totient is φ = 380624251392.

The previous prime is 1212212111989. The next prime is 1212212112031. The reversal of 1212212112020 is 202112122121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212212112020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2391107 + ... + 2853386.

It is an arithmetic number, because the mean of its divisors is an integer number (32893466368).

Almost surely, 2^{1212212112020} is an apocalyptic number.

1212212112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212212112020 is an abundant number, since it is smaller than the sum of its proper divisors (1945560659308).

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

1212212112020 is a wasteful number, since it uses less digits than its factorization.

1212212112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5244649 (or 5244647 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212212112020 its reverse (202112122121), we get a palindrome (1414324234141).

The spelling of 1212212112020 in words is "one trillion, two hundred twelve billion, two hundred twelve million, one hundred twelve thousand, twenty".