2111244253440 has 144 divisors (see below), whose sum is σ = 7706041623168. Its totient is φ = 482570108928.

The previous prime is 2111244253427. The next prime is 2111244253441. The reversal of 2111244253440 is 443524421112.

It is a super-3 number, since 3×2111244253440³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2111244253441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39244777 + ... + 39298536.

Almost surely, 2^{2111244253440} is an apocalyptic number.

2111244253440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111244253440 is an abundant number, since it is smaller than the sum of its proper divisors (5594797369728).

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

2111244253440 is an equidigital number, since it uses as much as digits as its factorization.

2111244253440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78543344 (or 78543330 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 2111244253440 its reverse (443524421112), we get a palindrome (2554768674552).

The spelling of 2111244253440 in words is "two trillion, one hundred eleven billion, two hundred forty-four million, two hundred fifty-three thousand, four hundred forty".