1203312011112 has 48 divisors (see below), whose sum is σ = 3259099486500. Its totient is φ = 401088070656.

The previous prime is 1203312011093. The next prime is 1203312011117. The reversal of 1203312011112 is 2111102133021.

1203312011112 is a `hidden beast` number, since 1 + 20 + 331 + 201 + 1 + 112 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1197855825156 + 5456185956 = 1094466^2 + 73866^2 .

It is a super-2 number, since 2×1203312011112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1203312011117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1568214 + ... + 2205882.

Almost surely, 2^{1203312011112} is an apocalyptic number.

1203312011112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1203312011112 is an abundant number, since it is smaller than the sum of its proper divisors (2055787475388).

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

1203312011112 is a wasteful number, since it uses less digits than its factorization.

1203312011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663890 (or 663883 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1203312011112 its reverse (2111102133021), we get a palindrome (3314414144133).

The spelling of 1203312011112 in words is "one trillion, two hundred three billion, three hundred twelve million, eleven thousand, one hundred twelve".