200120221220 has 12 divisors (see below), whose sum is σ = 420252464604. Its totient is φ = 80048088480.

The previous prime is 200120221211. The next prime is 200120221261. The reversal of 200120221220 is 22122021002.

It can be written as a sum of positive squares in 2 ways, for example, as 59447217124 + 140673004096 = 243818^2 + 375064^2 .

It is a super-2 number, since 2×200120221220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200120221195 and 200120221204.

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, 5003005511 + ... + 5003005550.

It is an arithmetic number, because the mean of its divisors is an integer number (35021038717).

Almost surely, 2^200120221220 is an apocalyptic number.

200120221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200120221220 is an abundant number, since it is smaller than the sum of its proper divisors (220132243384).

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

200120221220 is a wasteful number, since it uses less digits than its factorization.

200120221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006011070 (or 10006011068 counting only the distinct ones).

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

Adding to 200120221220 its reverse (22122021002), we get a palindrome (222242242222).

The spelling of 200120221220 in words is "two hundred billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twenty".