1200202117 has 2 divisors, whose sum is σ = 1200202118. Its totient is φ = 1200202116.

The previous prime is 1200202109. The next prime is 1200202147. The reversal of 1200202117 is 7112020021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 913611076 + 286591041 = 30226^2 + 16929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200202117 - 2³ = 1200202109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200202117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200202147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600101058 + 600101059.

It is an arithmetic number, because the mean of its divisors is an integer number (600101059).

Almost surely, 2^1200202117 is an apocalyptic number.

It is an amenable number.

1200202117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200202117 is an equidigital number, since it uses as much as digits as its factorization.

1200202117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 1200202117 is about 34643.9333361557. The cubic root of 1200202117 is about 1062.7182273228.

Adding to 1200202117 its reverse (7112020021), we get a palindrome (8312222138).

The spelling of 1200202117 in words is "one billion, two hundred million, two hundred two thousand, one hundred seventeen".