13211221553023 has 16 divisors (see below), whose sum is σ = 14514650206560. Its totient is φ = 11951243910144.

The previous prime is 13211221553003. The next prime is 13211221553083. The reversal of 13211221553023 is 32035512211231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13211221553023 - 2⁹ = 13211221552511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211221553003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50393661 + ... + 50655142.

It is an arithmetic number, because the mean of its divisors is an integer number (907165637910).

Almost surely, 2^{13211221553023} is an apocalyptic number.

13211221553023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13211221553023 is a deficient number, since it is larger than the sum of its proper divisors (1303428653537).

13211221553023 is a wasteful number, since it uses less digits than its factorization.

13211221553023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101049018.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 13211221553023 its reverse (32035512211231), we get a palindrome (45246733764254).

The spelling of 13211221553023 in words is "thirteen trillion, two hundred eleven billion, two hundred twenty-one million, five hundred fifty-three thousand, twenty-three".