212206310293 has 2 divisors, whose sum is σ = 212206310294. Its totient is φ = 212206310292.

The previous prime is 212206310263. The next prime is 212206310297. The reversal of 212206310293 is 392013602212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120407612004 + 91798698289 = 346998^2 + 302983^2 .

It is a cyclic number.

It is not a de Polignac number, because 212206310293 - 2³³ = 203616375701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212206310297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106103155146 + 106103155147.

It is an arithmetic number, because the mean of its divisors is an integer number (106103155147).

Almost surely, 2^212206310293 is an apocalyptic number.

It is an amenable number.

212206310293 is a deficient number, since it is larger than the sum of its proper divisors (1).

212206310293 is an equidigital number, since it uses as much as digits as its factorization.

212206310293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 212206310293 in words is "two hundred twelve billion, two hundred six million, three hundred ten thousand, two hundred ninety-three".