1121807417 has 2 divisors, whose sum is σ = 1121807418. Its totient is φ = 1121807416.

The previous prime is 1121807371. The next prime is 1121807419. The reversal of 1121807417 is 7147081211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 732297721 + 389509696 = 27061^2 + 19736^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121807417 - 2¹² = 1121803321 is a prime.

Together with 1121807419, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1121807419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560903708 + 560903709.

It is an arithmetic number, because the mean of its divisors is an integer number (560903709).

Almost surely, 2^1121807417 is an apocalyptic number.

It is an amenable number.

1121807417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121807417 is an equidigital number, since it uses as much as digits as its factorization.

1121807417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 32.

The square root of 1121807417 is about 33493.3936321777. The cubic root of 1121807417 is about 1039.0571512176.

Adding to 1121807417 its reverse (7147081211), we get a palindrome (8268888628).

The spelling of 1121807417 in words is "one billion, one hundred twenty-one million, eight hundred seven thousand, four hundred seventeen".