212243552718749 has 2 divisors, whose sum is σ = 212243552718750. Its totient is φ = 212243552718748.

The previous prime is 212243552718707. The next prime is 212243552718763. The reversal of 212243552718749 is 947817255342212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167656349375524 + 44587203343225 = 12948218^2 + 6677365^2 .

It is a cyclic number.

It is not a de Polignac number, because 212243552718749 - 2²⁰ = 212243551670173 is a prime.

It is a super-2 number, since 2×212243552718749² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212243552718691 and 212243552718700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212243552718049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106121776359374 + 106121776359375.

It is an arithmetic number, because the mean of its divisors is an integer number (106121776359375).

Almost surely, 2^{212243552718749} is an apocalyptic number.

It is an amenable number.

212243552718749 is a deficient number, since it is larger than the sum of its proper divisors (1).

212243552718749 is an equidigital number, since it uses as much as digits as its factorization.

212243552718749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67737600, while the sum is 62.

The spelling of 212243552718749 in words is "two hundred twelve trillion, two hundred forty-three billion, five hundred fifty-two million, seven hundred eighteen thousand, seven hundred forty-nine".