200031201220 has 24 divisors (see below), whose sum is σ = 426951845208. Its totient is φ = 78700800000.

The previous prime is 200031201217. The next prime is 200031201247. The reversal of 200031201220 is 22102130002.

It can be written as a sum of positive squares in 4 ways, for example, as 6401280064 + 193629921156 = 80008^2 + 440034^2 .

It is a super-2 number, since 2×200031201220² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 200031201220.

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, 81978781 + ... + 81981220.

It is an arithmetic number, because the mean of its divisors is an integer number (17789660217).

Almost surely, 2^200031201220 is an apocalyptic number.

200031201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200031201220 is an abundant number, since it is smaller than the sum of its proper divisors (226920643988).

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

200031201220 is a wasteful number, since it uses less digits than its factorization.

200031201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163960071 (or 163960069 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 200031201220 its reverse (22102130002), we get a palindrome (222133331222).

The spelling of 200031201220 in words is "two hundred billion, thirty-one million, two hundred one thousand, two hundred twenty".