2126250521 has 2 divisors, whose sum is σ = 2126250522. Its totient is φ = 2126250520.

The previous prime is 2126250517. The next prime is 2126250523. The reversal of 2126250521 is 1250526212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1797336025 + 328914496 = 42395^2 + 18136^2 .

It is a cyclic number.

It is not a de Polignac number, because 2126250521 - 2² = 2126250517 is a prime.

It is a super-3 number, since 3×2126250521³ (a number of 29 digits) contains 333 as substring.

Together with 2126250523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2126250523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063125260 + 1063125261.

It is an arithmetic number, because the mean of its divisors is an integer number (1063125261).

Almost surely, 2^2126250521 is an apocalyptic number.

It is an amenable number.

2126250521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126250521 is an equidigital number, since it uses as much as digits as its factorization.

2126250521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2126250521 is about 46111.2840961949. The cubic root of 2126250521 is about 1285.8929373754.

Adding to 2126250521 its reverse (1250526212), we get a palindrome (3376776733).

The spelling of 2126250521 in words is "two billion, one hundred twenty-six million, two hundred fifty thousand, five hundred twenty-one".