12123111022 has 64 divisors (see below), whose sum is σ = 20676902400. Its totient is φ = 5283809280.

The previous prime is 12123111001. The next prime is 12123111029. The reversal of 12123111022 is 22011132121.

It is a junction number, because it is equal to n+sod(n) for n = 12123110987 and 12123111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123111029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9190479 + ... + 9191797.

It is an arithmetic number, because the mean of its divisors is an integer number (323076600).

Almost surely, 2^12123111022 is an apocalyptic number.

12123111022 is a deficient number, since it is larger than the sum of its proper divisors (8553791378).

12123111022 is a wasteful number, since it uses less digits than its factorization.

12123111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12123111022 its reverse (22011132121), we get a palindrome (34134243143).

The spelling of 12123111022 in words is "twelve billion, one hundred twenty-three million, one hundred eleven thousand, twenty-two".