1125532101 has 4 divisors (see below), whose sum is σ = 1500709472. Its totient is φ = 750354732.

The previous prime is 1125532027. The next prime is 1125532103. The reversal of 1125532101 is 1012355211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1125532101 - 2¹¹ = 1125530053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125532103) 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, 187588681 + ... + 187588686.

It is an arithmetic number, because the mean of its divisors is an integer number (375177368).

Almost surely, 2^1125532101 is an apocalyptic number.

It is an amenable number.

1125532101 is a deficient number, since it is larger than the sum of its proper divisors (375177371).

1125532101 is an equidigital number, since it uses as much as digits as its factorization.

1125532101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375177370.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1125532101 is about 33548.9508181702. The cubic root of 1125532101 is about 1040.2058582264.

Adding to 1125532101 its reverse (1012355211), we get a palindrome (2137887312).

The spelling of 1125532101 in words is "one billion, one hundred twenty-five million, five hundred thirty-two thousand, one hundred one".