212213039993 has 2 divisors, whose sum is σ = 212213039994. Its totient is φ = 212213039992.

The previous prime is 212213039981. The next prime is 212213040043. The reversal of 212213039993 is 399930312212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203966947129 + 8246092864 = 451627^2 + 90808^2 .

It is a cyclic number.

It is not a de Polignac number, because 212213039993 - 2¹⁰ = 212213038969 is a prime.

It is not a weakly prime, because it can be changed into another prime (212213039903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106519996 + 106106519997.

It is an arithmetic number, because the mean of its divisors is an integer number (106106519997).

Almost surely, 2^212213039993 is an apocalyptic number.

It is an amenable number.

212213039993 is a deficient number, since it is larger than the sum of its proper divisors (1).

212213039993 is an equidigital number, since it uses as much as digits as its factorization.

212213039993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 44.

The spelling of 212213039993 in words is "two hundred twelve billion, two hundred thirteen million, thirty-nine thousand, nine hundred ninety-three".