200221101221 has 4 divisors (see below), whose sum is σ = 200331661344. Its totient is φ = 200110541100.

The previous prime is 200221101217. The next prime is 200221101259. The reversal of 200221101221 is 122101122002.

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 200221101221 - 2² = 200221101217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200221101196 and 200221101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221101121) 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, 55277345 + ... + 55280966.

It is an arithmetic number, because the mean of its divisors is an integer number (50082915336).

Almost surely, 2^200221101221 is an apocalyptic number.

It is an amenable number.

200221101221 is a deficient number, since it is larger than the sum of its proper divisors (110560123).

200221101221 is a wasteful number, since it uses less digits than its factorization.

200221101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110560122.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200221101221 its reverse (122101122002), we get a palindrome (322322223223).

The spelling of 200221101221 in words is "two hundred billion, two hundred twenty-one million, one hundred one thousand, two hundred twenty-one".