213221424122393 has 2 divisors, whose sum is σ = 213221424122394. Its totient is φ = 213221424122392.

The previous prime is 213221424122303. The next prime is 213221424122407. The reversal of 213221424122393 is 393221424122312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180582746619664 + 32638677502729 = 13438108^2 + 5713027^2 .

It is a cyclic number.

It is not a de Polignac number, because 213221424122393 - 2³² = 213217129155097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213221424122393.

It is not a weakly prime, because it can be changed into another prime (213221424122303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106610712061196 + 106610712061197.

It is an arithmetic number, because the mean of its divisors is an integer number (106610712061197).

Almost surely, 2^{213221424122393} is an apocalyptic number.

It is an amenable number.

213221424122393 is a deficient number, since it is larger than the sum of its proper divisors (1).

213221424122393 is an equidigital number, since it uses as much as digits as its factorization.

213221424122393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 41.

The spelling of 213221424122393 in words is "two hundred thirteen trillion, two hundred twenty-one billion, four hundred twenty-four million, one hundred twenty-two thousand, three hundred ninety-three".