10521405330 has 32 divisors (see below), whose sum is σ = 25501393728. Its totient is φ = 2777928000.

The previous prime is 10521405317. The next prime is 10521405341. The reversal of 10521405330 is 3350412501.

It is a super-2 number, since 2×10521405330² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10521405330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1733176 + ... + 1739235.

It is an arithmetic number, because the mean of its divisors is an integer number (796918554).

Almost surely, 2^10521405330 is an apocalyptic number.

10521405330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10521405330 is an abundant number, since it is smaller than the sum of its proper divisors (14979988398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10521405330 is a wasteful number, since it uses less digits than its factorization.

10521405330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472522.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 10521405330 its reverse (3350412501), we get a palindrome (13871817831).

The spelling of 10521405330 in words is "ten billion, five hundred twenty-one million, four hundred five thousand, three hundred thirty".