12002311121 has 2 divisors, whose sum is σ = 12002311122. Its totient is φ = 12002311120.

The previous prime is 12002311109. The next prime is 12002311147. The reversal of 12002311121 is 12111320021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11443650625 + 558660496 = 106975^2 + 23636^2 .

It is a cyclic number.

It is not a de Polignac number, because 12002311121 - 2²² = 11998116817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12002311096 and 12002311105.

It is not a weakly prime, because it can be changed into another prime (12002311021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001155560 + 6001155561.

It is an arithmetic number, because the mean of its divisors is an integer number (6001155561).

Almost surely, 2^12002311121 is an apocalyptic number.

It is an amenable number.

12002311121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12002311121 is an equidigital number, since it uses as much as digits as its factorization.

12002311121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12002311121 its reverse (12111320021), we get a palindrome (24113631142).

The spelling of 12002311121 in words is "twelve billion, two million, three hundred eleven thousand, one hundred twenty-one".