123111011222 has 8 divisors (see below), whose sum is σ = 184669252272. Its totient is φ = 61554593800.

The previous prime is 123111011161. The next prime is 123111011279. The reversal of 123111011222 is 222110111321.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 123111011222.

It is a congruent number.

It is an unprimeable number.

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, 272354 + ... + 566037.

It is an arithmetic number, because the mean of its divisors is an integer number (23083656534).

Almost surely, 2^123111011222 is an apocalyptic number.

123111011222 is a deficient number, since it is larger than the sum of its proper divisors (61558241050).

123111011222 is an equidigital number, since it uses as much as digits as its factorization.

123111011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911814.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 123111011222 its reverse (222110111321), we get a palindrome (345221122543).

The spelling of 123111011222 in words is "one hundred twenty-three billion, one hundred eleven million, eleven thousand, two hundred twenty-two".