2113434103212 has 144 divisors (see below), whose sum is σ = 5720304844800. Its totient is φ = 681581796480.

The previous prime is 2113434103147. The next prime is 2113434103217. The reversal of 2113434103212 is 2123014343112.

2113434103212 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 434 + 10 + 3 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2113434103217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 183467989 + ... + 183479507.

It is an arithmetic number, because the mean of its divisors is an integer number (39724339200).

Almost surely, 2^{2113434103212} 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 2113434103212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2860152422400).

2113434103212 is an abundant number, since it is smaller than the sum of its proper divisors (3606870741588).

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

2113434103212 is a wasteful number, since it uses less digits than its factorization.

2113434103212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17658 (or 17644 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 2113434103212 its reverse (2123014343112), we get a palindrome (4236448446324).

The spelling of 2113434103212 in words is "two trillion, one hundred thirteen billion, four hundred thirty-four million, one hundred three thousand, two hundred twelve".