13440221111 has 4 divisors (see below), whose sum is σ = 13768031424. Its totient is φ = 13112410800.

The previous prime is 13440221107. The next prime is 13440221149. The reversal of 13440221111 is 11112204431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11112204431 = 17383 ⋅639257.

It is a cyclic number.

It is not a de Polignac number, because 13440221111 - 2² = 13440221107 is a prime.

It is a super-4 number, since 4×13440221111⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440521111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163905095 + ... + 163905176.

It is an arithmetic number, because the mean of its divisors is an integer number (3442007856).

Almost surely, 2^13440221111 is an apocalyptic number.

13440221111 is a deficient number, since it is larger than the sum of its proper divisors (327810313).

13440221111 is an equidigital number, since it uses as much as digits as its factorization.

13440221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327810312.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 13440221111 its reverse (11112204431), we get a palindrome (24552425542).

The spelling of 13440221111 in words is "thirteen billion, four hundred forty million, two hundred twenty-one thousand, one hundred eleven".