12212020202120 has 32 divisors (see below), whose sum is σ = 27720205159320. Its totient is φ = 4841579688960.

The previous prime is 12212020202119. The next prime is 12212020202141. The reversal of 12212020202120 is 2120202021221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10115542084036 + 2096478118084 = 3180494^2 + 1447922^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350882671 + ... + 1350891710.

Almost surely, 2^{12212020202120} is an apocalyptic number.

12212020202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212020202120 is an abundant number, since it is smaller than the sum of its proper divisors (15508184957200).

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

12212020202120 is a wasteful number, since it uses less digits than its factorization.

12212020202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701774505 (or 2701774501 counting only the distinct ones).

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

Adding to 12212020202120 its reverse (2120202021221), we get a palindrome (14332222223341).

The spelling of 12212020202120 in words is "twelve trillion, two hundred twelve billion, twenty million, two hundred two thousand, one hundred twenty".