2113111433344 has 128 divisors (see below), whose sum is σ = 4320503107200. Its totient is φ = 1029147033600.

The previous prime is 2113111433341. The next prime is 2113111433353. The reversal of 2113111433344 is 4433341113112.

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

It is not an unprimeable number, because it can be changed into a prime (2113111433341) 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, 609139642 + ... + 609143110.

It is an arithmetic number, because the mean of its divisors is an integer number (33753930525).

Almost surely, 2^{2113111433344} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113111433344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2160251553600).

2113111433344 is an abundant number, since it is smaller than the sum of its proper divisors (2207391673856).

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

2113111433344 is an equidigital number, since it uses as much as digits as its factorization.

2113111433344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342 (or 4330 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

Adding to 2113111433344 its reverse (4433341113112), we get a palindrome (6546452546456).

The spelling of 2113111433344 in words is "two trillion, one hundred thirteen billion, one hundred eleven million, four hundred thirty-three thousand, three hundred forty-four".