13212134522500 has 135 divisors (see below), whose sum is σ = 29157399482211. Its totient is φ = 5236801092000.

The previous prime is 13212134522467. The next prime is 13212134522527. The reversal of 13212134522500 is 522543121231.

It is a happy number.

The square root of 13212134522500 is 3634850.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 1035831346564 + 12176303175936 = 1017758^2 + 3489456^2 .

It is a Duffinian number.

It is an unprimeable number.

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 44 ways as a sum of consecutive naturals, for example, 25262207239 + ... + 25262207761.

Almost surely, 2^{13212134522500} is an apocalyptic number.

13212134522500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13212134522500 is the 3634850-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13212134522500

13212134522500 is an abundant number, since it is smaller than the sum of its proper divisors (15945264959711).

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

13212134522500 is an frugal number, since it uses more digits than its factorization.

13212134522500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 13212134522500 its reverse (522543121231), we get a palindrome (13734677643731).

The spelling of 13212134522500 in words is "thirteen trillion, two hundred twelve billion, one hundred thirty-four million, five hundred twenty-two thousand, five hundred".