221111222111113 has 4 divisors (see below), whose sum is σ = 221112268898688. Its totient is φ = 221110175323540.

The previous prime is 221111222111083. The next prime is 221111222111123. The reversal of 221111222111113 is 311111222111122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221111222111113 - 2³⁷ = 220973783157641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221111222111123) 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, 523076881 + ... + 523499422.

It is an arithmetic number, because the mean of its divisors is an integer number (55278067224672).

Almost surely, 2^{221111222111113} is an apocalyptic number.

It is an amenable number.

221111222111113 is a deficient number, since it is larger than the sum of its proper divisors (1046787575).

221111222111113 is a wasteful number, since it uses less digits than its factorization.

221111222111113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046787574.

The product of its digits is 96, while the sum is 22.

Adding to 221111222111113 its reverse (311111222111122), we get a palindrome (532222444222235).

Subtracting 221111222111113 from its reverse (311111222111122), we obtain a palindrome (90000000000009).

The spelling of 221111222111113 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, one hundred thirteen".