221123343122 has 32 divisors (see below), whose sum is σ = 368228450304. Its totient is φ = 98750912400.

The previous prime is 221123343121. The next prime is 221123343197. The reversal of 221123343122 is 221343321122.

It is a junction number, because it is equal to n+sod(n) for n = 221123343091 and 221123343100.

It is not an unprimeable number, because it can be changed into a prime (221123343121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96404 + ... + 671967.

It is an arithmetic number, because the mean of its divisors is an integer number (11507139072).

Almost surely, 2^221123343122 is an apocalyptic number.

221123343122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221123343122 is a deficient number, since it is larger than the sum of its proper divisors (147105107182).

221123343122 is a wasteful number, since it uses less digits than its factorization.

221123343122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768614.

The product of its digits is 3456, while the sum is 26.

Adding to 221123343122 its reverse (221343321122), we get a palindrome (442466664244).

The spelling of 221123343122 in words is "two hundred twenty-one billion, one hundred twenty-three million, three hundred forty-three thousand, one hundred twenty-two".