1001220230320 has 40 divisors (see below), whose sum is σ = 2328119142624. Its totient is φ = 400439557632.

The previous prime is 1001220230299. The next prime is 1001220230321. The reversal of 1001220230320 is 230320221001.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1001220230294 and 1001220230303.

It is not an unprimeable number, because it can be changed into a prime (1001220230321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90444 + ... + 1417963.

Almost surely, 2^{1001220230320} is an apocalyptic number.

1001220230320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001220230320 is an abundant number, since it is smaller than the sum of its proper divisors (1326898912304).

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

1001220230320 is a wasteful number, since it uses less digits than its factorization.

1001220230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516717 (or 1516711 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1001220230320 its reverse (230320221001), we get a palindrome (1231540451321).

The spelling of 1001220230320 in words is "one trillion, one billion, two hundred twenty million, two hundred thirty thousand, three hundred twenty".