200202112021221 has 32 divisors (see below), whose sum is σ = 305404011306240. Its totient is φ = 129538078156800.

The previous prime is 200202112021213. The next prime is 200202112021271. The reversal of 200202112021221 is 122120211202002.

It is a happy number.

200202112021221 is a `hidden beast` number, since 200 + 2 + 0 + 211 + 20 + 212 + 21 = 666.

It is not a de Polignac number, because 200202112021221 - 2³ = 200202112021213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200202112021194 and 200202112021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200202112021211) 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, 468312385 + ... + 468739686.

It is an arithmetic number, because the mean of its divisors is an integer number (9543875353320).

Almost surely, 2^{200202112021221} is an apocalyptic number.

It is an amenable number.

200202112021221 is a deficient number, since it is larger than the sum of its proper divisors (105201899285019).

200202112021221 is a wasteful number, since it uses less digits than its factorization.

200202112021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937052314 (or 937052308 counting only the distinct ones).

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

Adding to 200202112021221 its reverse (122120211202002), we get a palindrome (322322323223223).

The spelling of 200202112021221 in words is "two hundred trillion, two hundred two billion, one hundred twelve million, twenty-one thousand, two hundred twenty-one".