200221220100221 has 32 divisors (see below), whose sum is σ = 214481610427392. Its totient is φ = 186558256097280.

The previous prime is 200221220100133. The next prime is 200221220100229. The reversal of 200221220100221 is 122001022122002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 200221220100221 - 2³⁴ = 200204040231037 is a prime.

It is a super-2 number, since 2×200221220100221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200221220100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221220100229) 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, 902978450 + ... + 903200156.

It is an arithmetic number, because the mean of its divisors is an integer number (6702550325856).

Almost surely, 2^{200221220100221} is an apocalyptic number.

It is an amenable number.

200221220100221 is a deficient number, since it is larger than the sum of its proper divisors (14260390327171).

200221220100221 is a wasteful number, since it uses less digits than its factorization.

200221220100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229989.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 200221220100221 its reverse (122001022122002), we get a palindrome (322222242222223).

The spelling of 200221220100221 in words is "two hundred trillion, two hundred twenty-one billion, two hundred twenty million, one hundred thousand, two hundred twenty-one".