212423046257 has 2 divisors, whose sum is σ = 212423046258. Its totient is φ = 212423046256.

The previous prime is 212423046229. The next prime is 212423046331. The reversal of 212423046257 is 752640324212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209906920336 + 2516125921 = 458156^2 + 50161^2 .

It is a cyclic number.

It is not a de Polignac number, because 212423046257 - 2⁶ = 212423046193 is a prime.

It is a super-2 number, since 2×212423046257² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212423046257.

It is not a weakly prime, because it can be changed into another prime (212423042257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106211523128 + 106211523129.

It is an arithmetic number, because the mean of its divisors is an integer number (106211523129).

Almost surely, 2^212423046257 is an apocalyptic number.

It is an amenable number.

212423046257 is a deficient number, since it is larger than the sum of its proper divisors (1).

212423046257 is an equidigital number, since it uses as much as digits as its factorization.

212423046257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 212423046257 in words is "two hundred twelve billion, four hundred twenty-three million, forty-six thousand, two hundred fifty-seven".