102220200200221 has 4 divisors (see below), whose sum is σ = 102242671121500. Its totient is φ = 102197729278944.

The previous prime is 102220200200197. The next prime is 102220200200273. The reversal of 102220200200221 is 122002002022201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33435155194596 + 68785045005625 = 5782314^2 + 8293675^2 .

It is a cyclic number.

It is not a de Polignac number, because 102220200200221 - 2⁹ = 102220200199709 is a prime.

It is a super-2 number, since 2×102220200200221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102220200200195 and 102220200200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220290200221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11235453816 + ... + 11235462913.

It is an arithmetic number, because the mean of its divisors is an integer number (25560667780375).

Almost surely, 2^{102220200200221} is an apocalyptic number.

It is an amenable number.

102220200200221 is a deficient number, since it is larger than the sum of its proper divisors (22470921279).

102220200200221 is an equidigital number, since it uses as much as digits as its factorization.

102220200200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22470921278.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 102220200200221 its reverse (122002002022201), we get a palindrome (224222202222422).

The spelling of 102220200200221 in words is "one hundred two trillion, two hundred twenty billion, two hundred million, two hundred thousand, two hundred twenty-one".