312212122234 has 4 divisors (see below), whose sum is σ = 468318183354. Its totient is φ = 156106061116.

The previous prime is 312212122223. The next prime is 312212122237. The reversal of 312212122234 is 432221212213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 311367348009 + 844774225 = 558003^2 + 29065^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312212122199 and 312212122208.

It is not an unprimeable number, because it can be changed into a prime (312212122237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78053030557 + ... + 78053030560.

Almost surely, 2^312212122234 is an apocalyptic number.

312212122234 is a deficient number, since it is larger than the sum of its proper divisors (156106061120).

312212122234 is a wasteful number, since it uses less digits than its factorization.

312212122234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156106061119.

The product of its digits is 2304, while the sum is 25.

Adding to 312212122234 its reverse (432221212213), we get a palindrome (744433334447).

The spelling of 312212122234 in words is "three hundred twelve billion, two hundred twelve million, one hundred twenty-two thousand, two hundred thirty-four".