1121765207 has 8 divisors (see below), whose sum is σ = 1153226592. Its totient is φ = 1090499200.

The previous prime is 1121765191. The next prime is 1121765237. The reversal of 1121765207 is 7025671211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121765207 - 2⁴ = 1121765191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121765237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37163 + ... + 60204.

It is an arithmetic number, because the mean of its divisors is an integer number (144153324).

Almost surely, 2^1121765207 is an apocalyptic number.

1121765207 is a deficient number, since it is larger than the sum of its proper divisors (31461385).

1121765207 is an equidigital number, since it uses as much as digits as its factorization.

1121765207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97689.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 1121765207 is about 33492.7635019865. The cubic root of 1121765207 is about 1039.0441189295.

The spelling of 1121765207 in words is "one billion, one hundred twenty-one million, seven hundred sixty-five thousand, two hundred seven".