205122107 has 2 divisors, whose sum is σ = 205122108. Its totient is φ = 205122106.

The previous prime is 205122097. The next prime is 205122143. The reversal of 205122107 is 701221502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205122107 - 2²² = 200927803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205122167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102561053 + 102561054.

It is an arithmetic number, because the mean of its divisors is an integer number (102561054).

Almost surely, 2^205122107 is an apocalyptic number.

205122107 is a deficient number, since it is larger than the sum of its proper divisors (1).

205122107 is an equidigital number, since it uses as much as digits as its factorization.

205122107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 205122107 is about 14322.0845898912. The cubic root of 205122107 is about 589.7539019594.

Adding to 205122107 its reverse (701221502), we get a palindrome (906343609).

The spelling of 205122107 in words is "two hundred five million, one hundred twenty-two thousand, one hundred seven".