20020120122020 has 24 divisors (see below), whose sum is σ = 42042420988344. Its totient is φ = 8008015909376.

The previous prime is 20020120122019. The next prime is 20020120122043. The reversal of 20020120122020 is 2022102102002.

It can be written as a sum of positive squares in 4 ways, for example, as 2119283762176 + 17900836359844 = 1455776^2 + 4230938^2 .

It is a super-2 number, since 2×20020120122020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20020120121986 and 20020120122004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3462674 + ... + 7213206.

It is an arithmetic number, because the mean of its divisors is an integer number (1751767541181).

Almost surely, 2^{20020120122020} is an apocalyptic number.

20020120122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020120122020 is an abundant number, since it is smaller than the sum of its proper divisors (22022300866324).

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

20020120122020 is a wasteful number, since it uses less digits than its factorization.

20020120122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017439 (or 4017437 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20020120122020 its reverse (2022102102002), we get a palindrome (22042222224022).

The spelling of 20020120122020 in words is "twenty trillion, twenty billion, one hundred twenty million, one hundred twenty-two thousand, twenty".