200010001220 has 12 divisors (see below), whose sum is σ = 420021002604. Its totient is φ = 80004000480.

The previous prime is 200010001201. The next prime is 200010001231. The reversal of 200010001220 is 22100010002.

It can be written as a sum of positive squares in 2 ways, for example, as 92017582336 + 107992418884 = 303344^2 + 328622^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200010001198 and 200010001207.

It is an unprimeable number.

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, 5000250011 + ... + 5000250050.

It is an arithmetic number, because the mean of its divisors is an integer number (35001750217).

Almost surely, 2^200010001220 is an apocalyptic number.

200010001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200010001220 is an abundant number, since it is smaller than the sum of its proper divisors (220011001384).

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

200010001220 is a wasteful number, since it uses less digits than its factorization.

200010001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000500070 (or 10000500068 counting only the distinct ones).

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

Adding to 200010001220 its reverse (22100010002), we get a palindrome (222110011222).

The spelling of 200010001220 in words is "two hundred billion, ten million, one thousand, two hundred twenty".