1321100330 has 32 divisors (see below), whose sum is σ = 2610111168. Its totient is φ = 477446400.

The previous prime is 1321100303. The next prime is 1321100399. The reversal of 1321100330 is 330011231.

It is a super-2 number, since 2×1321100330² = 3490612163852217800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18911 + ... + 54770.

It is an arithmetic number, because the mean of its divisors is an integer number (81565974).

Almost surely, 2^1321100330 is an apocalyptic number.

1321100330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321100330 is a deficient number, since it is larger than the sum of its proper divisors (1289010838).

1321100330 is a wasteful number, since it uses less digits than its factorization.

1321100330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73862.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1321100330 is about 36346.9438880355. The cubic root of 1321100330 is about 1097.2660287214.

Adding to 1321100330 its reverse (330011231), we get a palindrome (1651111561).

The spelling of 1321100330 in words is "one billion, three hundred twenty-one million, one hundred thousand, three hundred thirty".