1125315121 has 8 divisors (see below), whose sum is σ = 1288635264. Its totient is φ = 962635200.

The previous prime is 1125315073. The next prime is 1125315127. The reversal of 1125315121 is 1215135211.

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 1125315121 - 2¹³ = 1125306929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1125315092 and 1125315101.

It is not an unprimeable number, because it can be changed into a prime (1125315127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156280 + ... + 163321.

It is an arithmetic number, because the mean of its divisors is an integer number (161079408).

Almost surely, 2^1125315121 is an apocalyptic number.

It is an amenable number.

1125315121 is a deficient number, since it is larger than the sum of its proper divisors (163320143).

1125315121 is an equidigital number, since it uses as much as digits as its factorization.

1125315121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320111.

The product of its digits is 300, while the sum is 22.

The square root of 1125315121 is about 33545.7168801026. The cubic root of 1125315121 is about 1040.1390103263.

The spelling of 1125315121 in words is "one billion, one hundred twenty-five million, three hundred fifteen thousand, one hundred twenty-one".