1113111243420 has 384 divisors, whose sum is σ = 3532450037760. Its totient is φ = 259523066880.

The previous prime is 1113111243403. The next prime is 1113111243451. The reversal of 1113111243420 is 243421113111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1175407387 + ... + 1175408333.

It is an arithmetic number, because the mean of its divisors is an integer number (9199088640).

Almost surely, 2^{1113111243420} is an apocalyptic number.

1113111243420 is a gapful number since it is divisible by the number (10) 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 1113111243420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1766225018880).

1113111243420 is an abundant number, since it is smaller than the sum of its proper divisors (2419338794340).

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

1113111243420 is a wasteful number, since it uses less digits than its factorization.

1113111243420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 1113111243420 its reverse (243421113111), we get a palindrome (1356532356531).

It can be divided in two parts, 1113111 and 243420, that added together give a palindrome (1356531).

The spelling of 1113111243420 in words is "one trillion, one hundred thirteen billion, one hundred eleven million, two hundred forty-three thousand, four hundred twenty".