2123123184 has 320 divisors, whose sum is σ = 7649510400. Its totient is φ = 548840448.

The previous prime is 2123123179. The next prime is 2123123203. The reversal of 2123123184 is 4813213212.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2083027 + ... + 2084045.

It is an arithmetic number, because the mean of its divisors is an integer number (23904720).

Almost surely, 2^2123123184 is an apocalyptic number.

2123123184 is a gapful number since it is divisible by the number (24) 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 2123123184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3824755200).

2123123184 is an abundant number, since it is smaller than the sum of its proper divisors (5526387216).

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

2123123184 is a wasteful number, since it uses less digits than its factorization.

2123123184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109 (or 1097 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 2123123184 is about 46077.3608619244. The cubic root of 2123123184 is about 1285.2621879674.

Adding to 2123123184 its reverse (4813213212), we get a palindrome (6936336396).

It can be divided in two parts, 212312 and 3184, that added together give a triangular number (215496 = T₆₅₆).

The spelling of 2123123184 in words is "two billion, one hundred twenty-three million, one hundred twenty-three thousand, one hundred eighty-four".