200521105220 has 48 divisors (see below), whose sum is σ = 444214928640. Its totient is φ = 75822759936.

The previous prime is 200521105199. The next prime is 200521105237. The reversal of 200521105220 is 22501125002.

It is a happy number.

It is a super-2 number, since 2×200521105220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 200521105192 and 200521105201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393917 + ... + 745796.

It is an arithmetic number, because the mean of its divisors is an integer number (9254477680).

Almost surely, 2^200521105220 is an apocalyptic number.

200521105220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200521105220 is an abundant number, since it is smaller than the sum of its proper divisors (243693823420).

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

200521105220 is a wasteful number, since it uses less digits than its factorization.

200521105220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140204 (or 1140202 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The spelling of 200521105220 in words is "two hundred billion, five hundred twenty-one million, one hundred five thousand, two hundred twenty".