212353103993 has 2 divisors, whose sum is σ = 212353103994. Its totient is φ = 212353103992.

The previous prime is 212353103981. The next prime is 212353104079. The reversal of 212353103993 is 399301353212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129310002409 + 83043101584 = 359597^2 + 288172^2 .

It is a cyclic number.

It is not a de Polignac number, because 212353103993 - 2⁸ = 212353103737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212353103993.

It is not a weakly prime, because it can be changed into another prime (212353103903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106176551996 + 106176551997.

It is an arithmetic number, because the mean of its divisors is an integer number (106176551997).

Almost surely, 2^212353103993 is an apocalyptic number.

It is an amenable number.

212353103993 is a deficient number, since it is larger than the sum of its proper divisors (1).

212353103993 is an equidigital number, since it uses as much as digits as its factorization.

212353103993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 41.

The spelling of 212353103993 in words is "two hundred twelve billion, three hundred fifty-three million, one hundred three thousand, nine hundred ninety-three".