1201322012320 has 144 divisors (see below), whose sum is σ = 2969584663752. Its totient is φ = 459218073600.

The previous prime is 1201322012299. The next prime is 1201322012351. The reversal of 1201322012320 is 232102231021.

It can be written as a sum of positive squares in 4 ways, for example, as 813048462864 + 388273549456 = 901692^2 + 623116^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102662470 + ... + 102674170.

Almost surely, 2^{1201322012320} is an apocalyptic number.

1201322012320 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 1201322012320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1484792331876).

1201322012320 is an abundant number, since it is smaller than the sum of its proper divisors (1768262651432).

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

1201322012320 is a wasteful number, since it uses less digits than its factorization.

1201322012320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12975 (or 12944 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1201322012320 its reverse (232102231021), we get a palindrome (1433424243341).

The spelling of 1201322012320 in words is "one trillion, two hundred one billion, three hundred twenty-two million, twelve thousand, three hundred twenty".