1200323035512 has 96 divisors (see below), whose sum is σ = 3283441430880. Its totient is φ = 396101871360.

The previous prime is 1200323035493. The next prime is 1200323035517. The reversal of 1200323035512 is 2155303230021.

It is a happy number.

1200323035512 is a `hidden beast` number, since 120 + 0 + 3 + 23 + 0 + 3 + 5 + 512 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200323035517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26059062 + ... + 26105082.

It is an arithmetic number, because the mean of its divisors is an integer number (34202514905).

Almost surely, 2^{1200323035512} is an apocalyptic number.

1200323035512 is a gapful number since it is divisible by the number (12) 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 1200323035512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1641720715440).

1200323035512 is an abundant number, since it is smaller than the sum of its proper divisors (2083118395368).

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

1200323035512 is a wasteful number, since it uses less digits than its factorization.

1200323035512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49653 (or 49646 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 1200323035512 its reverse (2155303230021), we get a palindrome (3355626265533).

The spelling of 1200323035512 in words is "one trillion, two hundred billion, three hundred twenty-three million, thirty-five thousand, five hundred twelve".