12221101212020 has 12 divisors (see below), whose sum is σ = 25664312545284. Its totient is φ = 4888440484800.

The previous prime is 12221101212011. The next prime is 12221101212031. The reversal of 12221101212020 is 2021210112221.

It can be written as a sum of positive squares in 2 ways, for example, as 9313080406756 + 2908020805264 = 3051734^2 + 1705292^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12221101212020.

It is a congruent number.

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, 305527530281 + ... + 305527530320.

It is an arithmetic number, because the mean of its divisors is an integer number (2138692712107).

Almost surely, 2^{12221101212020} is an apocalyptic number.

12221101212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221101212020 is an abundant number, since it is smaller than the sum of its proper divisors (13443211333264).

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

12221101212020 is a wasteful number, since it uses less digits than its factorization.

12221101212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611055060610 (or 611055060608 counting only the distinct ones).

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

Adding to 12221101212020 its reverse (2021210112221), we get a palindrome (14242311324241).

The spelling of 12221101212020 in words is "twelve trillion, two hundred twenty-one billion, one hundred one million, two hundred twelve thousand, twenty".