22111122121 has 8 divisors (see below), whose sum is σ = 24140865600. Its totient is φ = 20084652240.

The previous prime is 22111122113. The next prime is 22111122139. The reversal of 22111122121 is 12122111122.

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 22111122121 - 2³ = 22111122113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22111122095 and 22111122104.

It is not an unprimeable number, because it can be changed into a prime (22111122191) 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, 804261 + ... + 831298.

It is an arithmetic number, because the mean of its divisors is an integer number (3017608200).

Almost surely, 2^22111122121 is an apocalyptic number.

It is an amenable number.

22111122121 is a deficient number, since it is larger than the sum of its proper divisors (2029743479).

22111122121 is a wasteful number, since it uses less digits than its factorization.

22111122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636799.

The product of its digits is 32, while the sum is 16.

Adding to 22111122121 its reverse (12122111122), we get a palindrome (34233233243).

It can be divided in two parts, 22111122 and 121, that multiplied together give a palindrome (2675445762).

The spelling of 22111122121 in words is "twenty-two billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty-one".