2125234021 has 16 divisors (see below), whose sum is σ = 2202602688. Its totient is φ = 2049264000.

The previous prime is 2125234003. The next prime is 2125234031. The reversal of 2125234021 is 1204325212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2125234021 - 2¹¹ = 2125231973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2125233983 and 2125234001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125234031) 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, 2479425 + ... + 2480281.

It is an arithmetic number, because the mean of its divisors is an integer number (137662668).

Almost surely, 2^2125234021 is an apocalyptic number.

It is an amenable number.

2125234021 is a deficient number, since it is larger than the sum of its proper divisors (77368667).

2125234021 is a wasteful number, since it uses less digits than its factorization.

2125234021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2125234021 is about 46100.2605307172. The cubic root of 2125234021 is about 1285.6879884116.

Adding to 2125234021 its reverse (1204325212), we get a palindrome (3329559233).

The spelling of 2125234021 in words is "two billion, one hundred twenty-five million, two hundred thirty-four thousand, twenty-one".