1121200387 has 2 divisors, whose sum is σ = 1121200388. Its totient is φ = 1121200386.

The previous prime is 1121200363. The next prime is 1121200417. The reversal of 1121200387 is 7830021211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121200387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121300387) 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, 560600193 + 560600194.

It is an arithmetic number, because the mean of its divisors is an integer number (560600194).

Almost surely, 2^1121200387 is an apocalyptic number.

1121200387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121200387 is an equidigital number, since it uses as much as digits as its factorization.

1121200387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1121200387 is about 33484.3304696391. The cubic root of 1121200387 is about 1038.8696999507.

Adding to 1121200387 its reverse (7830021211), we get a palindrome (8951221598).

The spelling of 1121200387 in words is "one billion, one hundred twenty-one million, two hundred thousand, three hundred eighty-seven".