9212120222020 has 12 divisors (see below), whose sum is σ = 19345452466284. Its totient is φ = 3684848088800.

The previous prime is 9212120221963. The next prime is 9212120222069. The reversal of 9212120222020 is 202220212129.

It can be written as a sum of positive squares in 2 ways, for example, as 5621603064064 + 3590517157956 = 2370992^2 + 1894866^2 .

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, 230303005531 + ... + 230303005570.

It is an arithmetic number, because the mean of its divisors is an integer number (1612121038857).

Almost surely, 2^{9212120222020} is an apocalyptic number.

It is an amenable number.

9212120222020 is an abundant number, since it is smaller than the sum of its proper divisors (10133332244264).

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

9212120222020 is a wasteful number, since it uses less digits than its factorization.

9212120222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460606011110 (or 460606011108 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 9212120222020 its reverse (202220212129), we get a palindrome (9414340434149).

The spelling of 9212120222020 in words is "nine trillion, two hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, twenty".