1125333021 has 8 divisors (see below), whose sum is σ = 1504026720. Its totient is φ = 748430672.

The previous prime is 1125332993. The next prime is 1125333067. The reversal of 1125333021 is 1203335211.

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 1125333021 - 2¹⁴ = 1125316637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125338021) 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, 446370 + ... + 448883.

It is an arithmetic number, because the mean of its divisors is an integer number (188003340).

Almost surely, 2^1125333021 is an apocalyptic number.

It is an amenable number.

1125333021 is a deficient number, since it is larger than the sum of its proper divisors (378693699).

1125333021 is an equidigital number, since it uses as much as digits as its factorization.

1125333021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895675.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1125333021 is about 33545.9836791232. The cubic root of 1125333021 is about 1040.1445253414.

Adding to 1125333021 its reverse (1203335211), we get a palindrome (2328668232).

The spelling of 1125333021 in words is "one billion, one hundred twenty-five million, three hundred thirty-three thousand, twenty-one".