312221201222311 has 8 divisors (see below), whose sum is σ = 312241598167248. Its totient is φ = 312200805000000.

The previous prime is 312221201222267. The next prime is 312221201222419. The reversal of 312221201222311 is 113222102122213.

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 312221201222311 - 2¹¹ = 312221201220263 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 (312221201202311) 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, 1054792371 + ... + 1055088331.

It is an arithmetic number, because the mean of its divisors is an integer number (39030199770906).

Almost surely, 2^{312221201222311} is an apocalyptic number.

312221201222311 is a deficient number, since it is larger than the sum of its proper divisors (20396944937).

312221201222311 is a wasteful number, since it uses less digits than its factorization.

312221201222311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361313.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 312221201222311 its reverse (113222102122213), we get a palindrome (425443303344524).

The spelling of 312221201222311 in words is "three hundred twelve trillion, two hundred twenty-one billion, two hundred one million, two hundred twenty-two thousand, three hundred eleven".