2123522320 has 80 divisors (see below), whose sum is σ = 5215237632. Its totient is φ = 802851840.

The previous prime is 2123522293. The next prime is 2123522333. The reversal of 2123522320 is 232253212.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 2123522291 and 2123522300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96684 + ... + 116596.

Almost surely, 2^2123522320 is an apocalyptic number.

2123522320 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 2123522320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2607618816).

2123522320 is an abundant number, since it is smaller than the sum of its proper divisors (3091715312).

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

2123522320 is a wasteful number, since it uses less digits than its factorization.

2123522320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20000 (or 19994 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 2123522320 is about 46081.6918092207. The cubic root of 2123522320 is about 1285.3427237663.

Adding to 2123522320 its reverse (232253212), we get a palindrome (2355775532).

The spelling of 2123522320 in words is "two billion, one hundred twenty-three million, five hundred twenty-two thousand, three hundred twenty".