1001230220320 has 72 divisors (see below), whose sum is σ = 2599992204012. Its totient is φ = 364083709440.

The previous prime is 1001230220317. The next prime is 1001230220329. The reversal of 1001230220320 is 230220321001.

1001230220320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 923190445584 + 78039774736 = 960828^2 + 279356^2 .

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 = 1001230220294 and 1001230220303.

It is not an unprimeable number, because it can be changed into a prime (1001230220329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25838859 + ... + 25877578.

Almost surely, 2^{1001230220320} is an apocalyptic number.

1001230220320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001230220320 is an abundant number, since it is smaller than the sum of its proper divisors (1598761983692).

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

1001230220320 is a wasteful number, since it uses less digits than its factorization.

1001230220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51716474 (or 51716455 counting only the distinct ones).

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

Adding to 1001230220320 its reverse (230220321001), we get a palindrome (1231450541321).

The spelling of 1001230220320 in words is "one trillion, one billion, two hundred thirty million, two hundred twenty thousand, three hundred twenty".