1125630211 has 4 divisors (see below), whose sum is σ = 1125779032. Its totient is φ = 1125481392.

The previous prime is 1125630203. The next prime is 1125630227. The reversal of 1125630211 is 1120365211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1120365211 = 7 ⋅160052173.

It is a cyclic number.

It is not a de Polignac number, because 1125630211 - 2³ = 1125630203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125637211) 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, 62421 + ... + 78406.

It is an arithmetic number, because the mean of its divisors is an integer number (281444758).

Almost surely, 2^1125630211 is an apocalyptic number.

1125630211 is a deficient number, since it is larger than the sum of its proper divisors (148821).

1125630211 is an equidigital number, since it uses as much as digits as its factorization.

1125630211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148820.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1125630211 is about 33550.4129780842. The cubic root of 1125630211 is about 1040.2360814520.

Adding to 1125630211 its reverse (1120365211), we get a palindrome (2245995422).

The spelling of 1125630211 in words is "one billion, one hundred twenty-five million, six hundred thirty thousand, two hundred eleven".