200031221021 has 8 divisors (see below), whose sum is σ = 212895164664. Its totient is φ = 187289210880.

The previous prime is 200031220997. The next prime is 200031221041. The reversal of 200031221021 is 120122130002.

It is a happy number.

200031221021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8177584900 + 191853636121 = 90430^2 + 438011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200031221021 - 2³⁰ = 198957479197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200031220987 and 200031221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200031221041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30479990 + ... + 30486551.

It is an arithmetic number, because the mean of its divisors is an integer number (26611895583).

Almost surely, 2^200031221021 is an apocalyptic number.

It is an amenable number.

200031221021 is a deficient number, since it is larger than the sum of its proper divisors (12863943643).

200031221021 is a wasteful number, since it uses less digits than its factorization.

200031221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60966751.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 200031221021 its reverse (120122130002), we get a palindrome (320153351023).

The spelling of 200031221021 in words is "two hundred billion, thirty-one million, two hundred twenty-one thousand, twenty-one".