102221200112221 has 4 divisors (see below), whose sum is σ = 102221301176572. Its totient is φ = 102221099047872.

The previous prime is 102221200112201. The next prime is 102221200112293. The reversal of 102221200112221 is 122211002122201.

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 4913116068025 + 97308084044196 = 2216555^2 + 9864486^2 .

It is a cyclic number.

It is not a de Polignac number, because 102221200112221 - 2²⁹ = 102220663241309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221200112201) 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, 48999510 + ... + 51043063.

It is an arithmetic number, because the mean of its divisors is an integer number (25555325294143).

Almost surely, 2^{102221200112221} is an apocalyptic number.

It is an amenable number.

102221200112221 is a deficient number, since it is larger than the sum of its proper divisors (101064351).

102221200112221 is a wasteful number, since it uses less digits than its factorization.

102221200112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101064350.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102221200112221 its reverse (122211002122201), we get a palindrome (224432202234422).

The spelling of 102221200112221 in words is "one hundred two trillion, two hundred twenty-one billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".