2111100502044 has 96 divisors (see below), whose sum is σ = 5134298400000. Its totient is φ = 674299777536.

The previous prime is 2111100502033. The next prime is 2111100502057. The reversal of 2111100502044 is 4402050011112.

It is a self number, because there is not a number n which added to its sum of digits gives 2111100502044.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169247392 + ... + 169259864.

It is an arithmetic number, because the mean of its divisors is an integer number (53482275000).

Almost surely, 2^{2111100502044} 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 2111100502044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2567149200000).

2111100502044 is an abundant number, since it is smaller than the sum of its proper divisors (3023197897956).

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

2111100502044 is a wasteful number, since it uses less digits than its factorization.

2111100502044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16147 (or 16145 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 2111100502044 its reverse (4402050011112), we get a palindrome (6513150513156).

The spelling of 2111100502044 in words is "two trillion, one hundred eleven billion, one hundred million, five hundred two thousand, forty-four".