1125033321 has 4 divisors (see below), whose sum is σ = 1500044432. Its totient is φ = 750022212.

The previous prime is 1125033319. The next prime is 1125033323. The reversal of 1125033321 is 1233305211.

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 an interprime number because it is at equal distance from previous prime (1125033319) and next prime (1125033323).

It is not a de Polignac number, because 1125033321 - 2¹ = 1125033319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125033323) 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, 187505551 + ... + 187505556.

It is an arithmetic number, because the mean of its divisors is an integer number (375011108).

Almost surely, 2^1125033321 is an apocalyptic number.

It is an amenable number.

1125033321 is a deficient number, since it is larger than the sum of its proper divisors (375011111).

1125033321 is an equidigital number, since it uses as much as digits as its factorization.

1125033321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375011110.

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

The square root of 1125033321 is about 33541.5163789594. The cubic root of 1125033321 is about 1040.0521796428.

Adding to 1125033321 its reverse (1233305211), we get a palindrome (2358338532).

The spelling of 1125033321 in words is "one billion, one hundred twenty-five million, thirty-three thousand, three hundred twenty-one".