200121002020221 has 8 divisors (see below), whose sum is σ = 266828848854624. Its totient is φ = 133413578266320.

The previous prime is 200121002020217. The next prime is 200121002020237. The reversal of 200121002020221 is 122020200121002.

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

It is not a de Polignac number, because 200121002020221 - 2² = 200121002020217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200121002020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121002020201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104664786 + ... + 106559651.

It is an arithmetic number, because the mean of its divisors is an integer number (33353606106828).

Almost surely, 2^{200121002020221} is an apocalyptic number.

It is an amenable number.

200121002020221 is a deficient number, since it is larger than the sum of its proper divisors (66707846834403).

200121002020221 is a wasteful number, since it uses less digits than its factorization.

200121002020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211540251.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 200121002020221 its reverse (122020200121002), we get a palindrome (322141202141223).

The spelling of 200121002020221 in words is "two hundred trillion, one hundred twenty-one billion, two million, twenty thousand, two hundred twenty-one".