222120203123 has 16 divisors (see below), whose sum is σ = 273903489216. Its totient is φ = 175406100480.

The previous prime is 222120203119. The next prime is 222120203153. The reversal of 222120203123 is 321302021222.

It is a happy number.

It is not a de Polignac number, because 222120203123 - 2² = 222120203119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222120203095 and 222120203104.

It is not an unprimeable number, because it can be changed into a prime (222120203153) 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, 2295086 + ... + 2389907.

It is an arithmetic number, because the mean of its divisors is an integer number (17118968076).

Almost surely, 2^222120203123 is an apocalyptic number.

222120203123 is a deficient number, since it is larger than the sum of its proper divisors (51783286093).

222120203123 is a wasteful number, since it uses less digits than its factorization.

222120203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4685534.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 222120203123 its reverse (321302021222), we get a palindrome (543422224345).

The spelling of 222120203123 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred three thousand, one hundred twenty-three".