1321033330 has 16 divisors (see below), whose sum is σ = 2503010880. Its totient is φ = 500602032.

The previous prime is 1321033309. The next prime is 1321033333. The reversal of 1321033330 is 333301231.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 1321033298 and 1321033307.

It is not an unprimeable number, because it can be changed into a prime (1321033333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3476214 + ... + 3476593.

It is an arithmetic number, because the mean of its divisors is an integer number (156438180).

Almost surely, 2^1321033330 is an apocalyptic number.

1321033330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321033330 is a deficient number, since it is larger than the sum of its proper divisors (1181977550).

1321033330 is a wasteful number, since it uses less digits than its factorization.

1321033330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6952833.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 1321033330 is about 36346.0222032618. The cubic root of 1321033330 is about 1097.2474790158.

Adding to 1321033330 its reverse (333301231), we get a palindrome (1654334561).

The spelling of 1321033330 in words is "one billion, three hundred twenty-one million, thirty-three thousand, three hundred thirty".