312221230111 has 8 divisors (see below), whose sum is σ = 364106391200. Its totient is φ = 267618196944.

The previous prime is 312221230109. The next prime is 312221230151. The reversal of 312221230111 is 111032122213.

It is not a de Polignac number, because 312221230111 - 2¹ = 312221230109 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 (312221230151) 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, 455132646 + ... + 455133331.

It is an arithmetic number, because the mean of its divisors is an integer number (45513298900).

Almost surely, 2^312221230111 is an apocalyptic number.

312221230111 is a deficient number, since it is larger than the sum of its proper divisors (51885161089).

312221230111 is an frugal number, since it uses more digits than its factorization.

312221230111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910265998 (or 910265984 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 312221230111 its reverse (111032122213), we get a palindrome (423253352324).

The spelling of 312221230111 in words is "three hundred twelve billion, two hundred twenty-one million, two hundred thirty thousand, one hundred eleven".