10500210491 has 2 divisors, whose sum is σ = 10500210492. Its totient is φ = 10500210490.

The previous prime is 10500210421. The next prime is 10500210527. The reversal of 10500210491 is 19401200501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10500210491 is a prime.

It is a super-2 number, since 2×10500210491² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (10500210421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5250105245 + 5250105246.

It is an arithmetic number, because the mean of its divisors is an integer number (5250105246).

Almost surely, 2^10500210491 is an apocalyptic number.

10500210491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10500210491 is an equidigital number, since it uses as much as digits as its factorization.

10500210491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 10500210491 its reverse (19401200501), we get a palindrome (29901410992).

The spelling of 10500210491 in words is "ten billion, five hundred million, two hundred ten thousand, four hundred ninety-one".