201222110321 has 8 divisors (see below), whose sum is σ = 201327451464. Its totient is φ = 201116805120.

The previous prime is 201222110273. The next prime is 201222110339. The reversal of 201222110321 is 123011222102.

It can be written as a sum of positive squares in 4 ways, for example, as 2962080625 + 198260029696 = 54425^2 + 445264^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 201222110321 - 2³⁴ = 184042241137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201222110321.

It is not an unprimeable number, because it can be changed into a prime (201222112321) 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, 26609381 + ... + 26616941.

It is an arithmetic number, because the mean of its divisors is an integer number (25165931433).

Almost surely, 2^201222110321 is an apocalyptic number.

It is an amenable number.

201222110321 is a deficient number, since it is larger than the sum of its proper divisors (105341143).

201222110321 is an equidigital number, since it uses as much as digits as its factorization.

201222110321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17971.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 201222110321 its reverse (123011222102), we get a palindrome (324233332423).

The spelling of 201222110321 in words is "two hundred one billion, two hundred twenty-two million, one hundred ten thousand, three hundred twenty-one".