123222120122 has 4 divisors (see below), whose sum is σ = 184833180186. Its totient is φ = 61611060060.

The previous prime is 123222120037. The next prime is 123222120137. The reversal of 123222120122 is 221021222321.

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

It can be written as a sum of positive squares in only one way, i.e., 68979244321 + 54242875801 = 262639^2 + 232901^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123222120094 and 123222120103.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30805530029 + ... + 30805530032.

Almost surely, 2^123222120122 is an apocalyptic number.

123222120122 is a deficient number, since it is larger than the sum of its proper divisors (61611060064).

123222120122 is an equidigital number, since it uses as much as digits as its factorization.

123222120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61611060063.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 123222120122 its reverse (221021222321), we get a palindrome (344243342443).

The spelling of 123222120122 in words is "one hundred twenty-three billion, two hundred twenty-two million, one hundred twenty thousand, one hundred twenty-two".