200120201220 has 24 divisors (see below), whose sum is σ = 560336563584. Its totient is φ = 53365386976.

The previous prime is 200120201207. The next prime is 200120201221. The reversal of 200120201220 is 22102021002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 200120201196 and 200120201205.

It is not an unprimeable number, because it can be changed into a prime (200120201221) 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, 1667668284 + ... + 1667668403.

It is an arithmetic number, because the mean of its divisors is an integer number (23347356816).

Almost surely, 2^200120201220 is an apocalyptic number.

200120201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200120201220 is an abundant number, since it is smaller than the sum of its proper divisors (360216362364).

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

200120201220 is a wasteful number, since it uses less digits than its factorization.

200120201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335336699 (or 3335336697 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 200120201220 its reverse (22102021002), we get a palindrome (222222222222).

The spelling of 200120201220 in words is "two hundred billion, one hundred twenty million, two hundred one thousand, two hundred twenty".