13211016512 has 14 divisors (see below), whose sum is σ = 26215611018. Its totient is φ = 6605508224.

The previous prime is 13211016499. The next prime is 13211016547. The reversal of 13211016512 is 21561011231.

It can be written as a sum of positive squares in only one way, i.e., 12333435136 + 877581376 = 111056^2 + 29624^2 .

It is a super-2 number, since 2×13211016512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103211003 + ... + 103211130.

Almost surely, 2^13211016512 is an apocalyptic number.

It is an amenable number.

13211016512 is a deficient number, since it is larger than the sum of its proper divisors (13004594506).

13211016512 is an equidigital number, since it uses as much as digits as its factorization.

13211016512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206422145 (or 206422135 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 13211016512 its reverse (21561011231), we get a palindrome (34772027743).

The spelling of 13211016512 in words is "thirteen billion, two hundred eleven million, sixteen thousand, five hundred twelve".