2126263321 has 48 divisors (see below), whose sum is σ = 2889749520. Its totient is φ = 1544417280.

The previous prime is 2126263283. The next prime is 2126263331. The reversal of 2126263321 is 1233626212.

It can be written as a sum of positive squares in 8 ways, for example, as 656384400 + 1469878921 = 25620^2 + 38339^2 .

It is not a de Polignac number, because 2126263321 - 2⁷ = 2126263193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2126263321.

It is not an unprimeable number, because it can be changed into a prime (2126263331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 441595 + ... + 446383.

It is an arithmetic number, because the mean of its divisors is an integer number (60203115).

Almost surely, 2^2126263321 is an apocalyptic number.

It is an amenable number.

2126263321 is a deficient number, since it is larger than the sum of its proper divisors (763486199).

2126263321 is a wasteful number, since it uses less digits than its factorization.

2126263321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4874 (or 4867 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 2126263321 is about 46111.4228906461. The cubic root of 2126263321 is about 1285.8955177231.

Adding to 2126263321 its reverse (1233626212), we get a palindrome (3359889533).

The spelling of 2126263321 in words is "two billion, one hundred twenty-six million, two hundred sixty-three thousand, three hundred twenty-one".