1200131111312 has 80 divisors (see below), whose sum is σ = 2738874462720. Its totient is φ = 498779887104.

The previous prime is 1200131111303. The next prime is 1200131111317. The reversal of 1200131111312 is 2131111310021.

It is a super-2 number, since 2×1200131111312² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1200131111317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472043 + ... + 1619594.

It is an arithmetic number, because the mean of its divisors is an integer number (34235930784).

Almost surely, 2^{1200131111312} is an apocalyptic number.

It is an amenable number.

1200131111312 is an abundant number, since it is smaller than the sum of its proper divisors (1538743351408).

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

1200131111312 is a wasteful number, since it uses less digits than its factorization.

1200131111312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091808 (or 2091802 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1200131111312 its reverse (2131111310021), we get a palindrome (3331242421333).

The spelling of 1200131111312 in words is "one trillion, two hundred billion, one hundred thirty-one million, one hundred eleven thousand, three hundred twelve".