1125122105 has 8 divisors (see below), whose sum is σ = 1350541512. Its totient is φ = 899834368.

The previous prime is 1125122093. The next prime is 1125122149. The reversal of 1125122105 is 5012215211.

It can be written as a sum of positive squares in 4 ways, for example, as 117440569 + 1007681536 = 10837^2 + 31744^2 .

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 1125122105 - 2²⁴ = 1108344889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13022 + ... + 49191.

It is an arithmetic number, because the mean of its divisors is an integer number (168817689).

Almost surely, 2^1125122105 is an apocalyptic number.

It is an amenable number.

1125122105 is a deficient number, since it is larger than the sum of its proper divisors (225419407).

1125122105 is an equidigital number, since it uses as much as digits as its factorization.

1125122105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65835.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1125122105 is about 33542.8398469778. The cubic root of 1125122105 is about 1040.0795381106.

Adding to 1125122105 its reverse (5012215211), we get a palindrome (6137337316).

The spelling of 1125122105 in words is "one billion, one hundred twenty-five million, one hundred twenty-two thousand, one hundred five".