22111122121111 has 8 divisors (see below), whose sum is σ = 22190172841440. Its totient is φ = 22032193300608.

The previous prime is 22111122121097. The next prime is 22111122121129. The reversal of 22111122121111 is 11112122111122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22111122121111 - 2⁹ = 22111122120599 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 (22111122121141) 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 7 ways as a sum of consecutive naturals, for example, 30111526 + ... + 30837091.

It is an arithmetic number, because the mean of its divisors is an integer number (2773771605180).

Almost surely, 2^{22111122121111} is an apocalyptic number.

22111122121111 is a deficient number, since it is larger than the sum of its proper divisors (79050720329).

22111122121111 is an equidigital number, since it uses as much as digits as its factorization.

22111122121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60949913.

The product of its digits is 32, while the sum is 19.

Adding to 22111122121111 its reverse (11112122111122), we get a palindrome (33223244232233).

The spelling of 22111122121111 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred eleven".