222121111122123 has 8 divisors (see below), whose sum is σ = 296934749073408. Its totient is φ = 147694106959464.

The previous prime is 222121111122077. The next prime is 222121111122151. The reversal of 222121111122123 is 321221111121222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222121111122123 - 2⁶ = 222121111122059 is a prime.

It is a super-2 number, since 2×222121111122123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222121111122093 and 222121111122102.

It is not an unprimeable number, because it can be changed into a prime (222121111122193) 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 7 ways as a sum of consecutive naturals, for example, 96658445815 + ... + 96658448112.

It is an arithmetic number, because the mean of its divisors is an integer number (37116843634176).

Almost surely, 2^{222121111122123} is an apocalyptic number.

222121111122123 is a deficient number, since it is larger than the sum of its proper divisors (74813637951285).

222121111122123 is a wasteful number, since it uses less digits than its factorization.

222121111122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193316894313.

The product of its digits is 384, while the sum is 24.

Adding to 222121111122123 its reverse (321221111121222), we get a palindrome (543342222243345).

Subtracting 222121111122123 from its reverse (321221111121222), we obtain a palindrome (99099999999099).

The spelling of 222121111122123 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty-three".