2125210320 has 120 divisors (see below), whose sum is σ = 7169157216. Its totient is φ = 564182784.

The previous prime is 2125210309. The next prime is 2125210333. The reversal of 2125210320 is 230125212.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2125210293 and 2125210302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156939 + ... + 169941.

Almost surely, 2^2125210320 is an apocalyptic number.

2125210320 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 2125210320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3584578608).

2125210320 is an abundant number, since it is smaller than the sum of its proper divisors (5043946896).

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

2125210320 is a wasteful number, since it uses less digits than its factorization.

2125210320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13249 (or 13240 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2125210320 is about 46100.0034707157. The cubic root of 2125210320 is about 1285.6832089843.

Adding to 2125210320 its reverse (230125212), we get a palindrome (2355335532).

The spelling of 2125210320 in words is "two billion, one hundred twenty-five million, two hundred ten thousand, three hundred twenty".