200221021221 has 8 divisors (see below), whose sum is σ = 287496851040. Its totient is φ = 123212936112.

The previous prime is 200221021219. The next prime is 200221021223. The reversal of 200221021221 is 122120122002.

It is an interprime number because it is at equal distance from previous prime (200221021219) and next prime (200221021223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 200221021221 - 2¹ = 200221021219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200221021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221021223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2566936131 + ... + 2566936208.

It is an arithmetic number, because the mean of its divisors is an integer number (35937106380).

Almost surely, 2^200221021221 is an apocalyptic number.

It is an amenable number.

200221021221 is a deficient number, since it is larger than the sum of its proper divisors (87275829819).

200221021221 is a wasteful number, since it uses less digits than its factorization.

200221021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133872355.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 200221021221 its reverse (122120122002), we get a palindrome (322341143223).

The spelling of 200221021221 in words is "two hundred billion, two hundred twenty-one million, twenty-one thousand, two hundred twenty-one".