1201003320 has 128 divisors (see below), whose sum is σ = 4004951040. Its totient is φ = 285642240.

The previous prime is 1201003249. The next prime is 1201003337. The reversal of 1201003320 is 233001021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1201003296 and 1201003305.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 61377 + ... + 78543.

It is an arithmetic number, because the mean of its divisors is an integer number (31288680).

Almost surely, 2^1201003320 is an apocalyptic number.

1201003320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201003320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002475520).

1201003320 is an abundant number, since it is smaller than the sum of its proper divisors (2803947720).

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

1201003320 is a wasteful number, since it uses less digits than its factorization.

1201003320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17245 (or 17241 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1201003320 is about 34655.4948024119. The cubic root of 1201003320 is about 1062.9546496235.

Adding to 1201003320 its reverse (233001021), we get a palindrome (1434004341).

The spelling of 1201003320 in words is "one billion, two hundred one million, three thousand, three hundred twenty".