201222110310321 has 4 divisors (see below), whose sum is σ = 268296147080432. Its totient is φ = 134148073540212.

The previous prime is 201222110310313. The next prime is 201222110310371. The reversal of 201222110310321 is 123013011222102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 201222110310321 - 2³ = 201222110310313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201222110310311) 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, 33537018385051 + ... + 33537018385056.

It is an arithmetic number, because the mean of its divisors is an integer number (67074036770108).

Almost surely, 2^{201222110310321} is an apocalyptic number.

It is an amenable number.

201222110310321 is a deficient number, since it is larger than the sum of its proper divisors (67074036770111).

201222110310321 is an equidigital number, since it uses as much as digits as its factorization.

201222110310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67074036770110.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 201222110310321 its reverse (123013011222102), we get a palindrome (324235121532423).

The spelling of 201222110310321 in words is "two hundred one trillion, two hundred twenty-two billion, one hundred ten million, three hundred ten thousand, three hundred twenty-one".