12221210220020 has 24 divisors (see below), whose sum is σ = 25834505319168. Its totient is φ = 4856110020000.

The previous prime is 12221210220019. The next prime is 12221210220031. The reversal of 12221210220020 is 2002201212221.

It is a happy number.

It is a congruent number.

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, 2023376156 + ... + 2023382195.

It is an arithmetic number, because the mean of its divisors is an integer number (1076437721632).

Almost surely, 2^{12221210220020} is an apocalyptic number.

12221210220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221210220020 is an abundant number, since it is smaller than the sum of its proper divisors (13613295099148).

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

12221210220020 is a wasteful number, since it uses less digits than its factorization.

12221210220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046758511 (or 4046758509 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12221210220020 its reverse (2002201212221), we get a palindrome (14223411432241).

The spelling of 12221210220020 in words is "twelve trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty thousand, twenty".