10521220536 has 48 divisors (see below), whose sum is σ = 28600954200. Its totient is φ = 3494029632.

The previous prime is 10521220517. The next prime is 10521220537. The reversal of 10521220536 is 63502212501.

It is a happy number.

10521220536 is a `hidden beast` number, since 1 + 0 + 5 + 2 + 122 + 0 + 536 = 666.

10521220536 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 2×10521220536² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521220537) 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 11 ways as a sum of consecutive naturals, for example, 252246 + ... + 290981.

Almost surely, 2^10521220536 is an apocalyptic number.

It is an amenable number.

10521220536 is an abundant number, since it is smaller than the sum of its proper divisors (18079733664).

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

10521220536 is a wasteful number, since it uses less digits than its factorization.

10521220536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543508 (or 543501 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 10521220536 in words is "ten billion, five hundred twenty-one million, two hundred twenty thousand, five hundred thirty-six".