13331204221111 has 16 divisors (see below), whose sum is σ = 15399208207936. Its totient is φ = 11304185942016.

The previous prime is 13331204221109. The next prime is 13331204221123. The reversal of 13331204221111 is 11112240213331.

It is a cyclic number.

It is not a de Polignac number, because 13331204221111 - 2¹ = 13331204221109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331204221171) 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, 2515926 + ... + 5743891.

It is an arithmetic number, because the mean of its divisors is an integer number (962450512996).

Almost surely, 2^{13331204221111} is an apocalyptic number.

13331204221111 is a deficient number, since it is larger than the sum of its proper divisors (2068003986825).

13331204221111 is an equidigital number, since it uses as much as digits as its factorization.

13331204221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8262298.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 13331204221111 its reverse (11112240213331), we get a palindrome (24443444434442).

The spelling of 13331204221111 in words is "thirteen trillion, three hundred thirty-one billion, two hundred four million, two hundred twenty-one thousand, one hundred eleven".