12023122121 has 8 divisors (see below), whose sum is σ = 12360844104. Its totient is φ = 11687518080.

The previous prime is 12023122103. The next prime is 12023122159. The reversal of 12023122121 is 12122132021.

It can be written as a sum of positive squares in 4 ways, for example, as 1011558025 + 11011564096 = 31805^2 + 104936^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12023122121 - 2¹⁸ = 12022859977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12023122121.

It is not an unprimeable number, because it can be changed into a prime (12023127121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517970 + ... + 540683.

It is an arithmetic number, because the mean of its divisors is an integer number (1545105513).

Almost surely, 2^12023122121 is an apocalyptic number.

It is an amenable number.

12023122121 is a deficient number, since it is larger than the sum of its proper divisors (337721983).

12023122121 is a wasteful number, since it uses less digits than its factorization.

12023122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058971.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12023122121 its reverse (12122132021), we get a palindrome (24145254142).

The spelling of 12023122121 in words is "twelve billion, twenty-three million, one hundred twenty-two thousand, one hundred twenty-one".