1121200417 has 2 divisors, whose sum is σ = 1121200418. Its totient is φ = 1121200416.

The previous prime is 1121200387. The next prime is 1121200433. The reversal of 1121200417 is 7140021211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 743325696 + 377874721 = 27264^2 + 19439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121200417 - 2¹¹ = 1121198369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121200394 and 1121200403.

It is not a weakly prime, because it can be changed into another prime (1121200477) 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, 560600208 + 560600209.

It is an arithmetic number, because the mean of its divisors is an integer number (560600209).

Almost surely, 2^1121200417 is an apocalyptic number.

It is an amenable number.

1121200417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121200417 is an equidigital number, since it uses as much as digits as its factorization.

1121200417 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 1121200417 is about 33484.3309176098. The cubic root of 1121200417 is about 1038.8697092164.

Adding to 1121200417 its reverse (7140021211), we get a palindrome (8261221628).

The spelling of 1121200417 in words is "one billion, one hundred twenty-one million, two hundred thousand, four hundred seventeen".