10500011021 has 4 divisors (see below), whose sum is σ = 11052643200. Its totient is φ = 9947378844.

The previous prime is 10500010999. The next prime is 10500011033. The reversal of 10500011021 is 12011000501.

10500011021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12011000501 = 37253 ⋅322417.

It is a cyclic number.

It is not a de Polignac number, because 10500011021 - 2²² = 10495816717 is a prime.

It is a super-2 number, since 2×10500011021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10500010993 and 10500011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10500011521) 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 in 3 ways as a sum of consecutive naturals, for example, 276316061 + ... + 276316098.

It is an arithmetic number, because the mean of its divisors is an integer number (2763160800).

Almost surely, 2^10500011021 is an apocalyptic number.

It is an amenable number.

10500011021 is a deficient number, since it is larger than the sum of its proper divisors (552632179).

10500011021 is an equidigital number, since it uses as much as digits as its factorization.

10500011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552632178.

The product of its (nonzero) digits is 10, while the sum is 11.

Adding to 10500011021 its reverse (12011000501), we get a palindrome (22511011522).

The spelling of 10500011021 in words is "ten billion, five hundred million, eleven thousand, twenty-one".