10521221313 has 8 divisors (see below), whose sum is σ = 14030708800. Its totient is φ = 7012940688.

The previous prime is 10521221311. The next prime is 10521221317. The reversal of 10521221313 is 31312212501.

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

It is not a de Polignac number, because 10521221313 - 2¹ = 10521221311 is a prime.

It is a super-3 number, since 3×10521221313³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10521221313.

It is not an unprimeable number, because it can be changed into a prime (10521221311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281173 + ... + 316386.

It is an arithmetic number, because the mean of its divisors is an integer number (1753838600).

Almost surely, 2^10521221313 is an apocalyptic number.

It is an amenable number.

10521221313 is a deficient number, since it is larger than the sum of its proper divisors (3509487487).

10521221313 is an equidigital number, since it uses as much as digits as its factorization.

10521221313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603431.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 10521221313 its reverse (31312212501), we get a palindrome (41833433814).

The spelling of 10521221313 in words is "ten billion, five hundred twenty-one million, two hundred twenty-one thousand, three hundred thirteen".