212057357 has 2 divisors, whose sum is σ = 212057358. Its totient is φ = 212057356.

The previous prime is 212057341. The next prime is 212057359. The reversal of 212057357 is 753750212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145781476 + 66275881 = 12074^2 + 8141^2 .

It is a cyclic number.

It is not a de Polignac number, because 212057357 - 2⁴ = 212057341 is a prime.

Together with 212057359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212057359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106028678 + 106028679.

It is an arithmetic number, because the mean of its divisors is an integer number (106028679).

Almost surely, 2^212057357 is an apocalyptic number.

It is an amenable number.

212057357 is a deficient number, since it is larger than the sum of its proper divisors (1).

212057357 is an equidigital number, since it uses as much as digits as its factorization.

212057357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 212057357 is about 14562.1892928227. The cubic root of 212057357 is about 596.3269652049.

The spelling of 212057357 in words is "two hundred twelve million, fifty-seven thousand, three hundred fifty-seven".