10521771216 has 40 divisors (see below), whose sum is σ = 29652265824. Its totient is φ = 3188415360.

The previous prime is 10521771209. The next prime is 10521771217. The reversal of 10521771216 is 61217712501.

10521771216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10521771216² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521771217) 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, 9963271 + ... + 9964326.

Almost surely, 2^10521771216 is an apocalyptic number.

10521771216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10521771216 is an abundant number, since it is smaller than the sum of its proper divisors (19130494608).

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

10521771216 is a wasteful number, since it uses less digits than its factorization.

10521771216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19927619 (or 19927613 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 33.

The spelling of 10521771216 in words is "ten billion, five hundred twenty-one million, seven hundred seventy-one thousand, two hundred sixteen".