22111121101111 has 4 divisors (see below), whose sum is σ = 25269852686992. Its totient is φ = 18952389515232.

The previous prime is 22111121101109. The next prime is 22111121101129. The reversal of 22111121101111 is 11110112111122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22111121101111 - 2¹ = 22111121101109 is a prime.

It is a super-2 number, since 2×22111121101111² (a number of 27 digits) contains 22 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 (22111121101171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579365792930 + ... + 1579365792943.

It is an arithmetic number, because the mean of its divisors is an integer number (6317463171748).

Almost surely, 2^{22111121101111} is an apocalyptic number.

22111121101111 is a deficient number, since it is larger than the sum of its proper divisors (3158731585881).

22111121101111 is an equidigital number, since it uses as much as digits as its factorization.

22111121101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158731585880.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 22111121101111 its reverse (11110112111122), we get a palindrome (33221233212233).

The spelling of 22111121101111 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty-one million, one hundred one thousand, one hundred eleven".