312211331100212 has 24 divisors (see below), whose sum is σ = 554564483395104. Its totient is φ = 153764670974112.

The previous prime is 312211331100173. The next prime is 312211331100233. The reversal of 312211331100212 is 212001133112213.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38157143 + ... + 45611294.

It is an arithmetic number, because the mean of its divisors is an integer number (23106853474796).

Almost surely, 2^{312211331100212} is an apocalyptic number.

It is an amenable number.

312211331100212 is a deficient number, since it is larger than the sum of its proper divisors (242353152294892).

312211331100212 is a wasteful number, since it uses less digits than its factorization.

312211331100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83782415 (or 83782413 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 312211331100212 its reverse (212001133112213), we get a palindrome (524212464212425).

The spelling of 312211331100212 in words is "three hundred twelve trillion, two hundred eleven billion, three hundred thirty-one million, one hundred thousand, two hundred twelve".