212266451 has 2 divisors, whose sum is σ = 212266452. Its totient is φ = 212266450.

The previous prime is 212266421. The next prime is 212266459. The reversal of 212266451 is 154662212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212266451 - 2⁶ = 212266387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212266459) 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, 106133225 + 106133226.

It is an arithmetic number, because the mean of its divisors is an integer number (106133226).

Almost surely, 2^212266451 is an apocalyptic number.

212266451 is a deficient number, since it is larger than the sum of its proper divisors (1).

212266451 is an equidigital number, since it uses as much as digits as its factorization.

212266451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 212266451 is about 14569.3668702521. The cubic root of 212266451 is about 596.5228987213.

The spelling of 212266451 in words is "two hundred twelve million, two hundred sixty-six thousand, four hundred fifty-one".