221022102323321 has 8 divisors (see below), whose sum is σ = 238027352803464. Its totient is φ = 204017359029120.

The previous prime is 221022102323311. The next prime is 221022102323551. The reversal of 221022102323321 is 123323201220122.

It can be written as a sum of positive squares in 4 ways, for example, as 6617421829225 + 214404680494096 = 2572435^2 + 14642564^2 .

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

It is not a de Polignac number, because 221022102323321 - 2²² = 221022098129017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221022102323311) 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, 125891156 + ... + 127634741.

It is an arithmetic number, because the mean of its divisors is an integer number (29753419100433).

Almost surely, 2^{221022102323321} is an apocalyptic number.

It is an amenable number.

221022102323321 is a deficient number, since it is larger than the sum of its proper divisors (17005250480143).

221022102323321 is a wasteful number, since it uses less digits than its factorization.

221022102323321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253592971.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221022102323321 its reverse (123323201220122), we get a palindrome (344345303543443).

The spelling of 221022102323321 in words is "two hundred twenty-one trillion, twenty-two billion, one hundred two million, three hundred twenty-three thousand, three hundred twenty-one".