212215172479 has 2 divisors, whose sum is σ = 212215172480. Its totient is φ = 212215172478.

The previous prime is 212215172473. The next prime is 212215172489. The reversal of 212215172479 is 974271512212.

It is a happy number.

212215172479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212215172479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212215172473) 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, 106107586239 + 106107586240.

It is an arithmetic number, because the mean of its divisors is an integer number (106107586240).

Almost surely, 2^212215172479 is an apocalyptic number.

212215172479 is a deficient number, since it is larger than the sum of its proper divisors (1).

212215172479 is an equidigital number, since it uses as much as digits as its factorization.

212215172479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 43.

The spelling of 212215172479 in words is "two hundred twelve billion, two hundred fifteen million, one hundred seventy-two thousand, four hundred seventy-nine".