1111213113012 has 144 divisors (see below), whose sum is σ = 2990215388160. Its totient is φ = 346733282304.

The previous prime is 1111213112987. The next prime is 1111213113139. The reversal of 1111213113012 is 2103113121111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 180008758 + ... + 180014930.

It is an arithmetic number, because the mean of its divisors is an integer number (20765384640).

Almost surely, 2^{1111213113012} is an apocalyptic number.

1111213113012 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 1111213113012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495107694080).

1111213113012 is an abundant number, since it is smaller than the sum of its proper divisors (1879002275148).

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

1111213113012 is a wasteful number, since it uses less digits than its factorization.

1111213113012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7742 (or 7737 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 1111213113012 its reverse (2103113121111), we get a palindrome (3214326234123).

The spelling of 1111213113012 in words is "one trillion, one hundred eleven billion, two hundred thirteen million, one hundred thirteen thousand, twelve".