22221311121 has 8 divisors (see below), whose sum is σ = 32920460960. Its totient is φ = 14814207396.

The previous prime is 22221311093. The next prime is 22221311131. The reversal of 22221311121 is 12111312222.

It is a de Polignac number, because none of the positive numbers 2^k-22221311121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22221311094 and 22221311103.

It is not an unprimeable number, because it can be changed into a prime (22221311131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411505735 + ... + 411505788.

It is an arithmetic number, because the mean of its divisors is an integer number (4115057620).

Almost surely, 2^22221311121 is an apocalyptic number.

It is an amenable number.

22221311121 is a deficient number, since it is larger than the sum of its proper divisors (10699149839).

22221311121 is an equidigital number, since it uses as much as digits as its factorization.

22221311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823011532 (or 823011526 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 22221311121 its reverse (12111312222), we get a palindrome (34332623343).

The spelling of 22221311121 in words is "twenty-two billion, two hundred twenty-one million, three hundred eleven thousand, one hundred twenty-one".