212551607 has 2 divisors, whose sum is σ = 212551608. Its totient is φ = 212551606.

The previous prime is 212551589. The next prime is 212551609. The reversal of 212551607 is 706155212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212551607 - 2²⁰ = 211503031 is a prime.

Together with 212551609, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212551607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212551609) 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, 106275803 + 106275804.

It is an arithmetic number, because the mean of its divisors is an integer number (106275804).

Almost surely, 2^212551607 is an apocalyptic number.

212551607 is a deficient number, since it is larger than the sum of its proper divisors (1).

212551607 is an equidigital number, since it uses as much as digits as its factorization.

212551607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 212551607 is about 14579.1497351526. The cubic root of 212551607 is about 596.7898995729.

The spelling of 212551607 in words is "two hundred twelve million, five hundred fifty-one thousand, six hundred seven".