312224212188949 has 2 divisors, whose sum is σ = 312224212188950. Its totient is φ = 312224212188948.

The previous prime is 312224212188947. The next prime is 312224212188991. The reversal of 312224212188949 is 949881212422213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311067931345924 + 1156280843025 = 17637118^2 + 1075305^2 .

It is a cyclic number.

It is not a de Polignac number, because 312224212188949 - 2¹ = 312224212188947 is a prime.

Together with 312224212188947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 312224212188893 and 312224212188902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312224212188947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156112106094474 + 156112106094475.

It is an arithmetic number, because the mean of its divisors is an integer number (156112106094475).

Almost surely, 2^{312224212188949} is an apocalyptic number.

It is an amenable number.

312224212188949 is a deficient number, since it is larger than the sum of its proper divisors (1).

312224212188949 is an equidigital number, since it uses as much as digits as its factorization.

312224212188949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7962624, while the sum is 58.

The spelling of 312224212188949 in words is "three hundred twelve trillion, two hundred twenty-four billion, two hundred twelve million, one hundred eighty-eight thousand, nine hundred forty-nine".