1213124420393 has 2 divisors, whose sum is σ = 1213124420394. Its totient is φ = 1213124420392.

The previous prime is 1213124420381. The next prime is 1213124420461. The reversal of 1213124420393 is 3930244213121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1109129135104 + 103995285289 = 1053152^2 + 322483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213124420393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213124423393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606562210196 + 606562210197.

It is an arithmetic number, because the mean of its divisors is an integer number (606562210197).

Almost surely, 2^{1213124420393} is an apocalyptic number.

It is an amenable number.

1213124420393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213124420393 is an equidigital number, since it uses as much as digits as its factorization.

1213124420393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 1213124420393 in words is "one trillion, two hundred thirteen billion, one hundred twenty-four million, four hundred twenty thousand, three hundred ninety-three".