312222112133 has 8 divisors (see below), whose sum is σ = 317099151000. Its totient is φ = 307382161408.

The previous prime is 312222112129. The next prime is 312222112159. The reversal of 312222112133 is 331211222213.

It can be written as a sum of positive squares in 4 ways, for example, as 20749538209 + 291472573924 = 144047^2 + 539882^2 .

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 312222112133 - 2² = 312222112129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312222112099 and 312222112108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312222112633) 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, 9255068 + ... + 9288741.

It is an arithmetic number, because the mean of its divisors is an integer number (39637393875).

Almost surely, 2^312222112133 is an apocalyptic number.

It is an amenable number.

312222112133 is a deficient number, since it is larger than the sum of its proper divisors (4877038867).

312222112133 is a wasteful number, since it uses less digits than its factorization.

312222112133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18544071.

The product of its digits is 864, while the sum is 23.

Adding to 312222112133 its reverse (331211222213), we get a palindrome (643433334346).

The spelling of 312222112133 in words is "three hundred twelve billion, two hundred twenty-two million, one hundred twelve thousand, one hundred thirty-three".