312212320400422 has 32 divisors (see below), whose sum is σ = 504680060908800. Its totient is φ = 144001689217920.

The previous prime is 312212320400401. The next prime is 312212320400423. The reversal of 312212320400422 is 224004023212213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212320400423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3317443147 + ... + 3317537257.

It is an arithmetic number, because the mean of its divisors is an integer number (15771251903400).

Almost surely, 2^{312212320400422} is an apocalyptic number.

312212320400422 is a deficient number, since it is larger than the sum of its proper divisors (192467740508378).

312212320400422 is a wasteful number, since it uses less digits than its factorization.

312212320400422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178048.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 312212320400422 its reverse (224004023212213), we get a palindrome (536216343612635).

The spelling of 312212320400422 in words is "three hundred twelve trillion, two hundred twelve billion, three hundred twenty million, four hundred thousand, four hundred twenty-two".