312133033221 has 8 divisors (see below), whose sum is σ = 416245751040. Its totient is φ = 208054502112.

The previous prime is 312133033217. The next prime is 312133033241. The reversal of 312133033221 is 122330331213.

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

It is not a de Polignac number, because 312133033221 - 2² = 312133033217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312133033191 and 312133033200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312133033241) 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, 8525365 + ... + 8561898.

It is an arithmetic number, because the mean of its divisors is an integer number (52030718880).

Almost surely, 2^312133033221 is an apocalyptic number.

It is an amenable number.

312133033221 is a deficient number, since it is larger than the sum of its proper divisors (104112717819).

312133033221 is a wasteful number, since it uses less digits than its factorization.

312133033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17093355.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 312133033221 its reverse (122330331213), we get a palindrome (434463364434).

The spelling of 312133033221 in words is "three hundred twelve billion, one hundred thirty-three million, thirty-three thousand, two hundred twenty-one".