2043102521 has 2 divisors, whose sum is σ = 2043102522. Its totient is φ = 2043102520.

The previous prime is 2043102511. The next prime is 2043102533. The reversal of 2043102521 is 1252013402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1344028921 + 699073600 = 36661^2 + 26440^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043102521 - 2¹⁴ = 2043086137 is a prime.

It is a super-2 number, since 2×2043102521² = 8348535822633110882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2043102493 and 2043102502.

It is not a weakly prime, because it can be changed into another prime (2043102511) 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 as a sum of consecutive naturals, namely, 1021551260 + 1021551261.

It is an arithmetic number, because the mean of its divisors is an integer number (1021551261).

Almost surely, 2^2043102521 is an apocalyptic number.

It is an amenable number.

2043102521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043102521 is an equidigital number, since it uses as much as digits as its factorization.

2043102521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2043102521 is about 45200.6915986913. The cubic root of 2043102521 is about 1268.9077597321.

Adding to 2043102521 its reverse (1252013402), we get a palindrome (3295115923).

The spelling of 2043102521 in words is "two billion, forty-three million, one hundred two thousand, five hundred twenty-one".