12122221010123 has 4 divisors (see below), whose sum is σ = 13853966868720. Its totient is φ = 10390475151528.

The previous prime is 12122221010117. The next prime is 12122221010143. The reversal of 12122221010123 is 32101012222121.

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

It is a cyclic number.

It is not a de Polignac number, because 12122221010123 - 2⁸ = 12122221009867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122221010095 and 12122221010104.

It is not an unprimeable number, because it can be changed into a prime (12122221010143) 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, 865872929288 + ... + 865872929301.

It is an arithmetic number, because the mean of its divisors is an integer number (3463491717180).

Almost surely, 2^{12122221010123} is an apocalyptic number.

12122221010123 is a deficient number, since it is larger than the sum of its proper divisors (1731745858597).

12122221010123 is an equidigital number, since it uses as much as digits as its factorization.

12122221010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731745858596.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12122221010123 its reverse (32101012222121), we get a palindrome (44223233232244).

The spelling of 12122221010123 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, ten thousand, one hundred twenty-three".