212077361 has 2 divisors, whose sum is σ = 212077362. Its totient is φ = 212077360.

The previous prime is 212077357. The next prime is 212077387. The reversal of 212077361 is 163770212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198246400 + 13830961 = 14080^2 + 3719^2 .

It is a cyclic number.

It is not a de Polignac number, because 212077361 - 2² = 212077357 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (212077321) 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, 106038680 + 106038681.

It is an arithmetic number, because the mean of its divisors is an integer number (106038681).

Almost surely, 2^212077361 is an apocalyptic number.

It is an amenable number.

212077361 is a deficient number, since it is larger than the sum of its proper divisors (1).

212077361 is an equidigital number, since it uses as much as digits as its factorization.

212077361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 212077361 is about 14562.8761238981. The cubic root of 212077361 is about 596.3457157130.

The spelling of 212077361 in words is "two hundred twelve million, seventy-seven thousand, three hundred sixty-one".