212212093 has 2 divisors, whose sum is σ = 212212094. Its totient is φ = 212212092.

The previous prime is 212212073. The next prime is 212212123. The reversal of 212212093 is 390212212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211208089 + 1004004 = 14533^2 + 1002^2 .

It is a cyclic number.

It is not a de Polignac number, because 212212093 - 2⁹ = 212211581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212212073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106046 + 106106047.

It is an arithmetic number, because the mean of its divisors is an integer number (106106047).

Almost surely, 2^212212093 is an apocalyptic number.

It is an amenable number.

212212093 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212093 is an equidigital number, since it uses as much as digits as its factorization.

212212093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 212212093 is about 14567.5012613694. The cubic root of 212212093 is about 596.4719744233.

The spelling of 212212093 in words is "two hundred twelve million, two hundred twelve thousand, ninety-three".