22221121123 has 4 divisors (see below), whose sum is σ = 23187256848. Its totient is φ = 21254985400.

The previous prime is 22221121121. The next prime is 22221121157. The reversal of 22221121123 is 32112112222.

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

It is not a de Polignac number, because 22221121123 - 2¹ = 22221121121 is a prime.

It is a super-2 number, since 2×22221121123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22221121123.

It is not an unprimeable number, because it can be changed into a prime (22221121121) 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, 483067828 + ... + 483067873.

It is an arithmetic number, because the mean of its divisors is an integer number (5796814212).

Almost surely, 2^22221121123 is an apocalyptic number.

22221121123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22221121123 is a deficient number, since it is larger than the sum of its proper divisors (966135725).

22221121123 is an equidigital number, since it uses as much as digits as its factorization.

22221121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966135724.

The product of its digits is 192, while the sum is 19.

Adding to 22221121123 its reverse (32112112222), we get a palindrome (54333233345).

The spelling of 22221121123 in words is "twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-three".