200212121022221 has 32 divisors (see below), whose sum is σ = 249768672061440. Its totient is φ = 155913495278400.

The previous prime is 200212121022203. The next prime is 200212121022233. The reversal of 200212121022221 is 122220121212002.

200212121022221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 200212121022221 - 2²⁶ = 200212053913357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200212121022193 and 200212121022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200212121022241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 981382895 + ... + 981586883.

It is an arithmetic number, because the mean of its divisors is an integer number (7805271001920).

Almost surely, 2^{200212121022221} is an apocalyptic number.

It is an amenable number.

200212121022221 is a deficient number, since it is larger than the sum of its proper divisors (49556551039219).

200212121022221 is a wasteful number, since it uses less digits than its factorization.

200212121022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211785.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 200212121022221 its reverse (122220121212002), we get a palindrome (322432242234223).

The spelling of 200212121022221 in words is "two hundred trillion, two hundred twelve billion, one hundred twenty-one million, twenty-two thousand, two hundred twenty-one".