200021221121 has 8 divisors (see below), whose sum is σ = 201262368384. Its totient is φ = 198780591040.

The previous prime is 200021221097. The next prime is 200021221207. The reversal of 200021221121 is 121122120002.

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 200021221121 - 2²⁶ = 199954112257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200021221096 and 200021221105.

It is not an unprimeable number, because it can be changed into a prime (200021226121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 661556 + ... + 915258.

It is an arithmetic number, because the mean of its divisors is an integer number (25157796048).

Almost surely, 2^200021221121 is an apocalyptic number.

It is an amenable number.

200021221121 is a deficient number, since it is larger than the sum of its proper divisors (1241147263).

200021221121 is a wasteful number, since it uses less digits than its factorization.

200021221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258591.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200021221121 its reverse (121122120002), we get a palindrome (321143341123).

The spelling of 200021221121 in words is "two hundred billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-one".