222120202123 has 4 divisors (see below), whose sum is σ = 222249118648. Its totient is φ = 221991285600.

The previous prime is 222120202067. The next prime is 222120202133. The reversal of 222120202123 is 321202021222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222120202123 is a prime.

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 222120202123.

It is not an unprimeable number, because it can be changed into a prime (222120202133) 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 3 ways as a sum of consecutive naturals, for example, 64455678 + ... + 64459123.

It is an arithmetic number, because the mean of its divisors is an integer number (55562279662).

Almost surely, 2^222120202123 is an apocalyptic number.

222120202123 is a deficient number, since it is larger than the sum of its proper divisors (128916525).

222120202123 is a wasteful number, since it uses less digits than its factorization.

222120202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128916524.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222120202123 its reverse (321202021222), we get a palindrome (543322223345).

The spelling of 222120202123 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred two thousand, one hundred twenty-three".