12023113212121 has 12 divisors (see below), whose sum is σ = 13572663434596. Its totient is φ = 10634694729120.

The previous prime is 12023113212119. The next prime is 12023113212181. The reversal of 12023113212121 is 12121231132021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9868268304400 + 2154844907721 = 3141380^2 + 1467939^2 .

It is not a de Polignac number, because 12023113212121 - 2¹ = 12023113212119 is a prime.

It is a super-2 number, since 2×12023113212121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12023113212092 and 12023113212101.

It is not an unprimeable number, because it can be changed into a prime (12023113212181) 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 11 ways as a sum of consecutive naturals, for example, 1342760010 + ... + 1342768963.

Almost surely, 2^{12023113212121} is an apocalyptic number.

12023113212121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12023113212121 is a deficient number, since it is larger than the sum of its proper divisors (1549550222475).

12023113212121 is a wasteful number, since it uses less digits than its factorization.

12023113212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685529032 (or 2685529021 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 12023113212121 its reverse (12121231132021), we get a palindrome (24144344344142).

The spelling of 12023113212121 in words is "twelve trillion, twenty-three billion, one hundred thirteen million, two hundred twelve thousand, one hundred twenty-one".