1321124033 has 4 divisors (see below), whose sum is σ = 1324866948. Its totient is φ = 1317381120.

The previous prime is 1321124027. The next prime is 1321124039. The reversal of 1321124033 is 3304211231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3304211231 = 5849 ⋅564919.

It is an interprime number because it is at equal distance from previous prime (1321124027) and next prime (1321124039).

It can be written as a sum of positive squares in 2 ways, for example, as 711182224 + 609941809 = 26668^2 + 24697^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321124033 - 2⁸ = 1321123777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321123996 and 1321124014.

It is not an unprimeable number, because it can be changed into a prime (1321124039) 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, 1870928 + ... + 1871633.

It is an arithmetic number, because the mean of its divisors is an integer number (331216737).

Almost surely, 2^1321124033 is an apocalyptic number.

It is an amenable number.

1321124033 is a deficient number, since it is larger than the sum of its proper divisors (3742915).

1321124033 is an equidigital number, since it uses as much as digits as its factorization.

1321124033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742914.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1321124033 is about 36347.2699525012. The cubic root of 1321124033 is about 1097.2725910141.

Adding to 1321124033 its reverse (3304211231), we get a palindrome (4625335264).

The spelling of 1321124033 in words is "one billion, three hundred twenty-one million, one hundred twenty-four thousand, thirty-three".