1201322201100 has 72 divisors (see below), whose sum is σ = 3972372085248. Its totient is φ = 274587931200.

The previous prime is 1201322201087. The next prime is 1201322201129. The reversal of 1201322201100 is 11022231021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1201322201100.

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, 286026996 + ... + 286031195.

Almost surely, 2^{1201322201100} is an apocalyptic number.

1201322201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201322201100 is an abundant number, since it is smaller than the sum of its proper divisors (2771049884148).

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

1201322201100 is a wasteful number, since it uses less digits than its factorization.

1201322201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572058215 (or 572058208 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1201322201100 its reverse (11022231021), we get a palindrome (1212344432121).

It can be divided in two parts, 120132 and 2201100, that added together give a palindrome (2321232).

The spelling of 1201322201100 in words is "one trillion, two hundred one billion, three hundred twenty-two million, two hundred one thousand, one hundred".