10500011001 has 12 divisors (see below), whose sum is σ = 15190726720. Its totient is φ = 6988910040.

The previous prime is 10500010999. The next prime is 10500011033. The reversal of 10500011001 is 10011000501.

It is not a de Polignac number, because 10500011001 - 2¹ = 10500010999 is a prime.

It is a super-2 number, since 2×10500011001² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10500012001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 918781 + ... + 930138.

Almost surely, 2^10500011001 is an apocalyptic number.

It is an amenable number.

10500011001 is a deficient number, since it is larger than the sum of its proper divisors (4690715719).

10500011001 is a wasteful number, since it uses less digits than its factorization.

10500011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849556 (or 1849553 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 9.

Adding to 10500011001 its reverse (10011000501), we get a palindrome (20511011502).

The spelling of 10500011001 in words is "ten billion, five hundred million, eleven thousand, one".