200210221121221 has 4 divisors (see below), whose sum is σ = 200210375179872. Its totient is φ = 200210067062572.

The previous prime is 200210221121179. The next prime is 200210221121291. The reversal of 200210221121221 is 122121122012002.

200210221121221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200210221121221 - 2⁹ = 200210221120709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200210221121291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75063241 + ... + 77684686.

It is an arithmetic number, because the mean of its divisors is an integer number (50052593794968).

Almost surely, 2^{200210221121221} is an apocalyptic number.

It is an amenable number.

200210221121221 is a deficient number, since it is larger than the sum of its proper divisors (154058651).

200210221121221 is a wasteful number, since it uses less digits than its factorization.

200210221121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154058650.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 200210221121221 its reverse (122121122012002), we get a palindrome (322331343133223).

The spelling of 200210221121221 in words is "two hundred trillion, two hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-one".