212160649 has 2 divisors, whose sum is σ = 212160650. Its totient is φ = 212160648.

The previous prime is 212160617. The next prime is 212160661. The reversal of 212160649 is 946061212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173185600 + 38975049 = 13160^2 + 6243^2 .

It is a cyclic number.

It is not a de Polignac number, because 212160649 - 2⁵ = 212160617 is a prime.

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 212160649.

It is not a weakly prime, because it can be changed into another prime (212160449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106080324 + 106080325.

It is an arithmetic number, because the mean of its divisors is an integer number (106080325).

Almost surely, 2^212160649 is an apocalyptic number.

It is an amenable number.

212160649 is a deficient number, since it is larger than the sum of its proper divisors (1).

212160649 is an equidigital number, since it uses as much as digits as its factorization.

212160649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 212160649 is about 14565.7354431556. The cubic root of 212160649 is about 596.4237720429.

The spelling of 212160649 in words is "two hundred twelve million, one hundred sixty thousand, six hundred forty-nine".