12212120210020 has 48 divisors (see below), whose sum is σ = 25663414629888. Its totient is φ = 4881427499520.

The previous prime is 12212120209997. The next prime is 12212120210053. The reversal of 12212120210020 is 2001202121221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12212120209976 and 12212120210003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318810189 + ... + 318848491.

It is an arithmetic number, because the mean of its divisors is an integer number (534654471456).

Almost surely, 2^{12212120210020} is an apocalyptic number.

12212120210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212120210020 is an abundant number, since it is smaller than the sum of its proper divisors (13451294419868).

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

12212120210020 is a wasteful number, since it uses less digits than its factorization.

12212120210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49060 (or 49058 counting only the distinct ones).

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

Adding to 12212120210020 its reverse (2001202121221), we get a palindrome (14213322331241).

The spelling of 12212120210020 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, two hundred ten thousand, twenty".