1113223101312 has 128 divisors (see below), whose sum is σ = 3382651296000. Its totient is φ = 317760307200.

The previous prime is 1113223101299. The next prime is 1113223101349. The reversal of 1113223101312 is 2131013223111.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1113223101312² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2628064 + ... + 3022112.

It is an arithmetic number, because the mean of its divisors is an integer number (26426963250).

Almost surely, 2^{1113223101312} is an apocalyptic number.

1113223101312 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 1113223101312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1691325648000).

1113223101312 is an abundant number, since it is smaller than the sum of its proper divisors (2269428194688).

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

1113223101312 is a wasteful number, since it uses less digits than its factorization.

1113223101312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395124 (or 395112 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1113223101312 its reverse (2131013223111), we get a palindrome (3244236324423).

The spelling of 1113223101312 in words is "one trillion, one hundred thirteen billion, two hundred twenty-three million, one hundred one thousand, three hundred twelve".