1210204117 has 2 divisors, whose sum is σ = 1210204118. Its totient is φ = 1210204116.

The previous prime is 1210204063. The next prime is 1210204139. The reversal of 1210204117 is 7114020121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016270641 + 193933476 = 31879^2 + 13926^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210204117 - 2⁷ = 1210203989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210204094 and 1210204103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210234117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605102058 + 605102059.

It is an arithmetic number, because the mean of its divisors is an integer number (605102059).

Almost surely, 2^1210204117 is an apocalyptic number.

It is an amenable number.

1210204117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210204117 is an equidigital number, since it uses as much as digits as its factorization.

1210204117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 1210204117 is about 34787.9881137153. The cubic root of 1210204117 is about 1065.6621528279.

Adding to 1210204117 its reverse (7114020121), we get a palindrome (8324224238).

The spelling of 1210204117 in words is "one billion, two hundred ten million, two hundred four thousand, one hundred seventeen".