2111002055540 has 48 divisors (see below), whose sum is σ = 5068341772032. Its totient is φ = 723495442176.

The previous prime is 2111002055473. The next prime is 2111002055549. The reversal of 2111002055540 is 455502001112.

It is a super-3 number, since 3×2111002055540³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111002055549) 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, 2514512 + ... + 3247271.

It is an arithmetic number, because the mean of its divisors is an integer number (105590453584).

Almost surely, 2^{2111002055540} is an apocalyptic number.

2111002055540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111002055540 is an abundant number, since it is smaller than the sum of its proper divisors (2957339716492).

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

2111002055540 is a wasteful number, since it uses less digits than its factorization.

2111002055540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5764416 (or 5764414 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 2111002055540 its reverse (455502001112), we get a palindrome (2566504056652).

The spelling of 2111002055540 in words is "two trillion, one hundred eleven billion, two million, fifty-five thousand, five hundred forty".