200121210201221 has 8 divisors (see below), whose sum is σ = 209516181850080. Its totient is φ = 190892521236592.

The previous prime is 200121210201197. The next prime is 200121210201229. The reversal of 200121210201221 is 122102012121002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200121210201221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200121210201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121210201229) 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, 41570668595 + ... + 41570673408.

It is an arithmetic number, because the mean of its divisors is an integer number (26189522731260).

Almost surely, 2^{200121210201221} is an apocalyptic number.

It is an amenable number.

200121210201221 is a deficient number, since it is larger than the sum of its proper divisors (9394971648859).

200121210201221 is an equidigital number, since it uses as much as digits as its factorization.

200121210201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83141342115.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 200121210201221 its reverse (122102012121002), we get a palindrome (322223222322223).

The spelling of 200121210201221 in words is "two hundred trillion, one hundred twenty-one billion, two hundred ten million, two hundred one thousand, two hundred twenty-one".