212246442349 has 2 divisors, whose sum is σ = 212246442350. Its totient is φ = 212246442348.

The previous prime is 212246442329. The next prime is 212246442409. The reversal of 212246442349 is 943244642212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171132797124 + 41113645225 = 413682^2 + 202765^2 .

It is a cyclic number.

It is not a de Polignac number, because 212246442349 - 2¹³ = 212246434157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212246442329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106123221174 + 106123221175.

It is an arithmetic number, because the mean of its divisors is an integer number (106123221175).

Almost surely, 2^212246442349 is an apocalyptic number.

It is an amenable number.

212246442349 is a deficient number, since it is larger than the sum of its proper divisors (1).

212246442349 is an equidigital number, since it uses as much as digits as its factorization.

212246442349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 43.

The spelling of 212246442349 in words is "two hundred twelve billion, two hundred forty-six million, four hundred forty-two thousand, three hundred forty-nine".