10521213009 has 8 divisors (see below), whose sum is σ = 14292968832. Its totient is φ = 6881799600.

The previous prime is 10521212981. The next prime is 10521213013. The reversal of 10521213009 is 90031212501.

10521213009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10521213009 - 2²⁴ = 10504435793 is a prime.

It is a super-2 number, since 2×10521213009² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10521213009.

It is not an unprimeable number, because it can be changed into a prime (10521213089) 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 7 ways as a sum of consecutive naturals, for example, 33085417 + ... + 33085734.

It is an arithmetic number, because the mean of its divisors is an integer number (1786621104).

Almost surely, 2^10521213009 is an apocalyptic number.

It is an amenable number.

10521213009 is a deficient number, since it is larger than the sum of its proper divisors (3771755823).

10521213009 is an equidigital number, since it uses as much as digits as its factorization.

10521213009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66171207.

The product of its (nonzero) digits is 540, while the sum is 24.

The spelling of 10521213009 in words is "ten billion, five hundred twenty-one million, two hundred thirteen thousand, nine".