222012123 has 16 divisors (see below), whose sum is σ = 313956096. Its totient is φ = 139249440.

The previous prime is 222012121. The next prime is 222012127. The reversal of 222012123 is 321210222.

It is a happy number.

It is not a de Polignac number, because 222012123 - 2¹ = 222012121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222012121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22165 + ... + 30582.

It is an arithmetic number, because the mean of its divisors is an integer number (19622256).

Almost surely, 2^222012123 is an apocalyptic number.

222012123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

222012123 is a deficient number, since it is larger than the sum of its proper divisors (91943973).

222012123 is a wasteful number, since it uses less digits than its factorization.

222012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52834.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222012123 is about 14900.0712414404. The cubic root of 222012123 is about 605.5159162761.

Adding to 222012123 its reverse (321210222), we get a palindrome (543222345).

The spelling of 222012123 in words is "two hundred twenty-two million, twelve thousand, one hundred twenty-three".