200120020 has 12 divisors (see below), whose sum is σ = 420252084. Its totient is φ = 80048000.

The previous prime is 200120017. The next prime is 200120029. The reversal of 200120020 is 20021002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100080016 + 100040004 = 10004^2 + 10002^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200119985 and 200120012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200120029) 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 3 ways as a sum of consecutive naturals, for example, 5002981 + ... + 5003020.

It is an arithmetic number, because the mean of its divisors is an integer number (35021007).

Almost surely, 2^200120020 is an apocalyptic number.

200120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200120020 is an abundant number, since it is smaller than the sum of its proper divisors (220132064).

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

200120020 is a wasteful number, since it uses less digits than its factorization.

200120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006010 (or 10006008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 200120020 is about 14146.3783351075. The cubic root of 200120020 is about 584.9205044534.

Adding to 200120020 its reverse (20021002), we get a palindrome (220141022).

The spelling of 200120020 in words is "two hundred million, one hundred twenty thousand, twenty".