312201222 has 8 divisors (see below), whose sum is σ = 624402456. Its totient is φ = 104067072.

The previous prime is 312201221. The next prime is 312201223. The reversal of 312201222 is 222102213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (312201221) and next prime (312201223).

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

312201222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312201221) 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, 26016763 + ... + 26016774.

It is an arithmetic number, because the mean of its divisors is an integer number (78050307).

Almost surely, 2^312201222 is an apocalyptic number.

312201222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312201222 is a wasteful number, since it uses less digits than its factorization.

312201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52033542.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 312201222 is about 17669.2167907918. The cubic root of 312201222 is about 678.3880663168.

Adding to 312201222 its reverse (222102213), we get a palindrome (534303435).

Subtracting from 312201222 its reverse (222102213), we obtain a palindrome (90099009).

The spelling of 312201222 in words is "three hundred twelve million, two hundred one thousand, two hundred twenty-two".