10130921 has 2 divisors, whose sum is σ = 10130922. Its totient is φ = 10130920.

The previous prime is 10130909. The next prime is 10130969. The reversal of 10130921 is 12903101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8042896 + 2088025 = 2836^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 10130921 - 2¹⁴ = 10114537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10130921.

It is not a weakly prime, because it can be changed into another prime (10130821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5065460 + 5065461.

It is an arithmetic number, because the mean of its divisors is an integer number (5065461).

Almost surely, 2^10130921 is an apocalyptic number.

It is an amenable number.

10130921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10130921 is an equidigital number, since it uses as much as digits as its factorization.

10130921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 10130921 is about 3182.9107747469. The cubic root of 10130921 is about 216.3795979937.

The spelling of 10130921 in words is "ten million, one hundred thirty thousand, nine hundred twenty-one".