218462201 has 2 divisors, whose sum is σ = 218462202. Its totient is φ = 218462200.

The previous prime is 218462197. The next prime is 218462207. The reversal of 218462201 is 102264812.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218005225 + 456976 = 14765^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 218462201 - 2² = 218462197 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_12042539 and since 218462201 and 12042539 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (218462207) 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, 109231100 + 109231101.

It is an arithmetic number, because the mean of its divisors is an integer number (109231101).

Almost surely, 2^218462201 is an apocalyptic number.

It is an amenable number.

218462201 is a deficient number, since it is larger than the sum of its proper divisors (1).

218462201 is an equidigital number, since it uses as much as digits as its factorization.

218462201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 218462201 is about 14780.4668735463. The cubic root of 218462201 is about 602.2712075863.

The spelling of 218462201 in words is "two hundred eighteen million, four hundred sixty-two thousand, two hundred one".