1121565707 has 4 divisors (see below), whose sum is σ = 1129752456. Its totient is φ = 1113378960.

The previous prime is 1121565593. The next prime is 1121565727. The reversal of 1121565707 is 7075651211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121565707 - 2¹⁴ = 1121549323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121565727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4093169 + ... + 4093442.

It is an arithmetic number, because the mean of its divisors is an integer number (282438114).

Almost surely, 2^1121565707 is an apocalyptic number.

1121565707 is a deficient number, since it is larger than the sum of its proper divisors (8186749).

1121565707 is an equidigital number, since it uses as much as digits as its factorization.

1121565707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8186748.

The product of its (nonzero) digits is 14700, while the sum is 35.

The square root of 1121565707 is about 33489.7851142703. The cubic root of 1121565707 is about 1038.9825191134.

The spelling of 1121565707 in words is "one billion, one hundred twenty-one million, five hundred sixty-five thousand, seven hundred seven".