20120122202020 has 24 divisors (see below), whose sum is σ = 42252592012344. Its totient is φ = 8047984997376.

The previous prime is 20120122202009. The next prime is 20120122202029. The reversal of 20120122202020 is 2020222102102.

It can be written as a sum of positive squares in 4 ways, for example, as 102676666624 + 20017445535396 = 320432^2 + 4474086^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20120122201985 and 20120122202003.

It is not an unprimeable number, because it can be changed into a prime (20120122202029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1368039 + ... + 6489358.

It is an arithmetic number, because the mean of its divisors is an integer number (1760524667181).

Almost surely, 2^{20120122202020} is an apocalyptic number.

20120122202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120122202020 is an abundant number, since it is smaller than the sum of its proper divisors (22132469810324).

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

20120122202020 is a wasteful number, since it uses less digits than its factorization.

20120122202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7985439 (or 7985437 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20120122202020 its reverse (2020222102102), we get a palindrome (22140344304122).

The spelling of 20120122202020 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-two million, two hundred two thousand, twenty".