1201123323200 has 84 divisors (see below), whose sum is σ = 2955834702492. Its totient is φ = 480397209600.

The previous prime is 1201123323187. The next prime is 1201123323223. The reversal of 1201123323200 is 23233211021.

It can be written as a sum of positive squares in 6 ways, for example, as 230945602624 + 970177720576 = 480568^2 + 984976^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16919780 + ... + 16990620.

It is an arithmetic number, because the mean of its divisors is an integer number (35188508363).

Almost surely, 2^{1201123323200} is an apocalyptic number.

1201123323200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201123323200 is an abundant number, since it is smaller than the sum of its proper divisors (1754711379292).

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

1201123323200 is a wasteful number, since it uses less digits than its factorization.

1201123323200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81460 (or 81445 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1201123323200 its reverse (23233211021), we get a palindrome (1224356534221).

The spelling of 1201123323200 in words is "one trillion, two hundred one billion, one hundred twenty-three million, three hundred twenty-three thousand, two hundred".