13212444455 has 16 divisors (see below), whose sum is σ = 19185802560. Its totient is φ = 8527022592.

The previous prime is 13212444439. The next prime is 13212444467. The reversal of 13212444455 is 55444421231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13212444455 - 2⁴ = 13212444439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11102300 + ... + 11103489.

It is an arithmetic number, because the mean of its divisors is an integer number (1199112660).

Almost surely, 2^13212444455 is an apocalyptic number.

13212444455 is a deficient number, since it is larger than the sum of its proper divisors (5973358105).

13212444455 is a wasteful number, since it uses less digits than its factorization.

13212444455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22205818.

The product of its digits is 76800, while the sum is 35.

Adding to 13212444455 its reverse (55444421231), we get a palindrome (68656865686).

The spelling of 13212444455 in words is "thirteen billion, two hundred twelve million, four hundred forty-four thousand, four hundred fifty-five".