13212143421544 has 32 divisors (see below), whose sum is σ = 26213928186240. Its totient is φ = 6229853291200.

The previous prime is 13212143421541. The next prime is 13212143421553. The reversal of 13212143421544 is 44512434121231.

It is not an unprimeable number, because it can be changed into a prime (13212143421541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505656847 + ... + 505682974.

It is an arithmetic number, because the mean of its divisors is an integer number (819185255820).

Almost surely, 2^{13212143421544} is an apocalyptic number.

It is an amenable number.

13212143421544 is a deficient number, since it is larger than the sum of its proper divisors (13001784764696).

13212143421544 is a wasteful number, since it uses less digits than its factorization.

13212143421544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011339921 (or 1011339917 counting only the distinct ones).

The product of its digits is 92160, while the sum is 37.

Adding to 13212143421544 its reverse (44512434121231), we get a palindrome (57724577542775).

The spelling of 13212143421544 in words is "thirteen trillion, two hundred twelve billion, one hundred forty-three million, four hundred twenty-one thousand, five hundred forty-four".