2111345500 has 96 divisors (see below), whose sum is σ = 5080578048. Its totient is φ = 760104000.

The previous prime is 2111345461. The next prime is 2111345519. The reversal of 2111345500 is 55431112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564637 + ... + 568363.

It is an arithmetic number, because the mean of its divisors is an integer number (52922688).

Almost surely, 2^2111345500 is an apocalyptic number.

2111345500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111345500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2540289024).

2111345500 is an abundant number, since it is smaller than the sum of its proper divisors (2969232548).

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

2111345500 is a wasteful number, since it uses less digits than its factorization.

2111345500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860 (or 3848 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2111345500 is about 45949.3797564233. The cubic root of 2111345500 is about 1282.8811847689.

Adding to 2111345500 its reverse (55431112), we get a palindrome (2166776612).

The spelling of 2111345500 in words is "two billion, one hundred eleven million, three hundred forty-five thousand, five hundred".