200201021212221 has 12 divisors (see below), whose sum is σ = 289180157065020. Its totient is φ = 133466930150400.

The previous prime is 200201021212193. The next prime is 200201021212223. The reversal of 200201021212221 is 122212120102002.

It is a happy number.

200201021212221 is a `hidden beast` number, since 20 + 0 + 201 + 0 + 212 + 12 + 221 = 666.

200201021212221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 34451206335225 + 165749814876996 = 5869515^2 + 12874386^2 .

It is not a de Polignac number, because 200201021212221 - 2⁵ = 200201021212189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200201021212194 and 200201021212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200201021212223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31724676 + ... + 37508093.

It is an arithmetic number, because the mean of its divisors is an integer number (24098346422085).

Almost surely, 2^{200201021212221} is an apocalyptic number.

It is an amenable number.

200201021212221 is a deficient number, since it is larger than the sum of its proper divisors (88979135852799).

200201021212221 is a wasteful number, since it uses less digits than its factorization.

200201021212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69554076 (or 69554073 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 200201021212221 its reverse (122212120102002), we get a palindrome (322413141314223).

The spelling of 200201021212221 in words is "two hundred trillion, two hundred one billion, twenty-one million, two hundred twelve thousand, two hundred twenty-one".