200021133121 has 12 divisors (see below), whose sum is σ = 211387041792. Its totient is φ = 189238412664.

The previous prime is 200021133077. The next prime is 200021133131. The reversal of 200021133121 is 121331120002.

It is not a de Polignac number, because 200021133121 - 2²³ = 200012744513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200021133095 and 200021133104.

It is not an unprimeable number, because it can be changed into a prime (200021133131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104641 + ... + 641086.

It is an arithmetic number, because the mean of its divisors is an integer number (17615586816).

Almost surely, 2^200021133121 is an apocalyptic number.

It is an amenable number.

200021133121 is a deficient number, since it is larger than the sum of its proper divisors (11365908671).

200021133121 is an equidigital number, since it uses as much as digits as its factorization.

200021133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746508 (or 746489 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 200021133121 its reverse (121331120002), we get a palindrome (321352253123).

The spelling of 200021133121 in words is "two hundred billion, twenty-one million, one hundred thirty-three thousand, one hundred twenty-one".