10750021 has 2 divisors, whose sum is σ = 10750022. Its totient is φ = 10750020.

The previous prime is 10750009. The next prime is 10750031. The reversal of 10750021 is 12005701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10692900 + 57121 = 3270^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 10750021 - 2⁵ = 10749989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10749977 and 10750004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10750031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5375010 + 5375011.

It is an arithmetic number, because the mean of its divisors is an integer number (5375011).

Almost surely, 2^10750021 is an apocalyptic number.

It is an amenable number.

10750021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10750021 is an equidigital number, since it uses as much as digits as its factorization.

10750021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 10750021 is about 3278.7224646194. The cubic root of 10750021 is about 220.7003918338.

Adding to 10750021 its reverse (12005701), we get a palindrome (22755722).

The spelling of 10750021 in words is "ten million, seven hundred fifty thousand, twenty-one".