1330123220 has 12 divisors (see below), whose sum is σ = 2793258804. Its totient is φ = 532049280.

The previous prime is 1330123219. The next prime is 1330123247. The reversal of 1330123220 is 223210331.

It can be written as a sum of positive squares in 2 ways, for example, as 815559364 + 514563856 = 28558^2 + 22684^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 33253061 + ... + 33253100.

It is an arithmetic number, because the mean of its divisors is an integer number (232771567).

Almost surely, 2^1330123220 is an apocalyptic number.

1330123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1330123220 is an abundant number, since it is smaller than the sum of its proper divisors (1463135584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1330123220 is a wasteful number, since it uses less digits than its factorization.

1330123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66506170 (or 66506168 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1330123220 is about 36470.8543908694. The cubic root of 1330123220 is about 1099.7584097539.

Adding to 1330123220 its reverse (223210331), we get a palindrome (1553333551).

The spelling of 1330123220 in words is "one billion, three hundred thirty million, one hundred twenty-three thousand, two hundred twenty".