2111103043440 has 160 divisors (see below), whose sum is σ = 6557134173696. Its totient is φ = 561868170240.

The previous prime is 2111103043433. The next prime is 2111103043447. The reversal of 2111103043440 is 443403011112.

It is an interprime number because it is at equal distance from previous prime (2111103043433) and next prime (2111103043447).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2111103043440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111103043447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 352965250 + ... + 352971230.

Almost surely, 2^{2111103043440} is an apocalyptic number.

2111103043440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111103043440 is an abundant number, since it is smaller than the sum of its proper divisors (4446031130256).

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

2111103043440 is a wasteful number, since it uses less digits than its factorization.

2111103043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8607 (or 8601 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 2111103043440 its reverse (443403011112), we get a palindrome (2554506054552).

The spelling of 2111103043440 in words is "two trillion, one hundred eleven billion, one hundred three million, forty-three thousand, four hundred forty".