12232121130121 has 4 divisors (see below), whose sum is σ = 12653918410500. Its totient is φ = 11810323849744.

The previous prime is 12232121130113. The next prime is 12232121130157. The reversal of 12232121130121 is 12103112123221.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2205804188025 + 10026316942096 = 1485195^2 + 3166436^2 .

It is a cyclic number.

It is not a de Polignac number, because 12232121130121 - 2³ = 12232121130113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12232121130092 and 12232121130101.

It is not an unprimeable number, because it can be changed into a prime (12232121130101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210898640146 + ... + 210898640203.

It is an arithmetic number, because the mean of its divisors is an integer number (3163479602625).

Almost surely, 2^{12232121130121} is an apocalyptic number.

It is an amenable number.

12232121130121 is a deficient number, since it is larger than the sum of its proper divisors (421797280379).

12232121130121 is an equidigital number, since it uses as much as digits as its factorization.

12232121130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421797280378.

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

Adding to 12232121130121 its reverse (12103112123221), we get a palindrome (24335233253342).

The spelling of 12232121130121 in words is "twelve trillion, two hundred thirty-two billion, one hundred twenty-one million, one hundred thirty thousand, one hundred twenty-one".