20220102202120 has 32 divisors (see below), whose sum is σ = 45495365693400. Its totient is φ = 8088016749568.

The previous prime is 20220102202099. The next prime is 20220102202121. The reversal of 20220102202120 is 2120220102202.

It can be written as a sum of positive squares in 4 ways, for example, as 14549998286916 + 5670103915204 = 3814446^2 + 2381198^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20220102202094 and 20220102202103.

It is not an unprimeable number, because it can be changed into a prime (20220102202121) by changing a digit.

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, 19608042 + ... + 20613478.

Almost surely, 2^{20220102202120} is an apocalyptic number.

20220102202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220102202120 is an abundant number, since it is smaller than the sum of its proper divisors (25275263491280).

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

20220102202120 is a wasteful number, since it uses less digits than its factorization.

20220102202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508217 (or 1508213 counting only the distinct ones).

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

Adding to 20220102202120 its reverse (2120220102202), we get a palindrome (22340322304322).

The spelling of 20220102202120 in words is "twenty trillion, two hundred twenty billion, one hundred two million, two hundred two thousand, one hundred twenty".