212124414124213 has 4 divisors (see below), whose sum is σ = 224602320837420. Its totient is φ = 199646507411008.

The previous prime is 212124414124177. The next prime is 212124414124261. The reversal of 212124414124213 is 312421414421212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 89704728102564 + 122419686021649 = 9471258^2 + 11064343^2 .

It is a cyclic number.

It is not a de Polignac number, because 212124414124213 - 2⁹ = 212124414123701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212124414724213) 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 in 3 ways as a sum of consecutive naturals, for example, 6238953356578 + ... + 6238953356611.

It is an arithmetic number, because the mean of its divisors is an integer number (56150580209355).

Almost surely, 2^{212124414124213} is an apocalyptic number.

It is an amenable number.

212124414124213 is a deficient number, since it is larger than the sum of its proper divisors (12477906713207).

212124414124213 is a wasteful number, since it uses less digits than its factorization.

212124414124213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12477906713206.

The product of its digits is 24576, while the sum is 34.

Adding to 212124414124213 its reverse (312421414421212), we get a palindrome (524545828545425).

The spelling of 212124414124213 in words is "two hundred twelve trillion, one hundred twenty-four billion, four hundred fourteen million, one hundred twenty-four thousand, two hundred thirteen".