212467091 has 2 divisors, whose sum is σ = 212467092. Its totient is φ = 212467090.

The previous prime is 212467067. The next prime is 212467127. The reversal of 212467091 is 190764212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212467091 - 2⁶ = 212467027 is a prime.

It is not a weakly prime, because it can be changed into another prime (212467691) 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, 106233545 + 106233546.

It is an arithmetic number, because the mean of its divisors is an integer number (106233546).

Almost surely, 2^212467091 is an apocalyptic number.

212467091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212467091 is an equidigital number, since it uses as much as digits as its factorization.

212467091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 212467091 is about 14576.2509240202. The cubic root of 212467091 is about 596.7107894021.

The spelling of 212467091 in words is "two hundred twelve million, four hundred sixty-seven thousand, ninety-one".