212212200091 has 2 divisors, whose sum is σ = 212212200092. Its totient is φ = 212212200090.

The previous prime is 212212200041. The next prime is 212212200113. The reversal of 212212200091 is 190002212212.

212212200091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (212212200113) can be obtained adding 212212200091 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212212200091 - 2¹³ = 212212191899 is a prime.

It is not a weakly prime, because it can be changed into another prime (212212200041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106100045 + 106106100046.

It is an arithmetic number, because the mean of its divisors is an integer number (106106100046).

Almost surely, 2^212212200091 is an apocalyptic number.

212212200091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212200091 is an equidigital number, since it uses as much as digits as its factorization.

212212200091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 212212200091 in words is "two hundred twelve billion, two hundred twelve million, two hundred thousand, ninety-one".