200221101121221 has 24 divisors (see below), whose sum is σ = 300022988865600. Its totient is φ = 133434753337152.

The previous prime is 200221101121103. The next prime is 200221101121331. The reversal of 200221101121221 is 122121101122002.

200221101121221 is a `hidden beast` number, since 2 + 0 + 0 + 221 + 101 + 121 + 221 = 666.

It is not a de Polignac number, because 200221101121221 - 2¹⁸ = 200221100859077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200221101121194 and 200221101121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221101141221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141208996 + ... + 142619853.

It is an arithmetic number, because the mean of its divisors is an integer number (12500957869400).

Almost surely, 2^{200221101121221} is an apocalyptic number.

It is an amenable number.

200221101121221 is a deficient number, since it is larger than the sum of its proper divisors (99801887744379).

200221101121221 is an equidigital number, since it uses as much as digits as its factorization.

200221101121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283831767 (or 283831755 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 200221101121221 its reverse (122121101122002), we get a palindrome (322342202243223).

The spelling of 200221101121221 in words is "two hundred trillion, two hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, two hundred twenty-one".