12020112111121 has 2 divisors, whose sum is σ = 12020112111122. Its totient is φ = 12020112111120.

The previous prime is 12020112111113. The next prime is 12020112111179. The reversal of 12020112111121 is 12111121102021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12017045166721 + 3066944400 = 3466561^2 + 55380^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020112111121 - 2³ = 12020112111113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020112111095 and 12020112111104.

It is not a weakly prime, because it can be changed into another prime (12020112151121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010056055560 + 6010056055561.

It is an arithmetic number, because the mean of its divisors is an integer number (6010056055561).

Almost surely, 2^{12020112111121} is an apocalyptic number.

It is an amenable number.

12020112111121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020112111121 is an equidigital number, since it uses as much as digits as its factorization.

12020112111121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12020112111121 its reverse (12111121102021), we get a palindrome (24131233213142).

The spelling of 12020112111121 in words is "twelve trillion, twenty billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty-one".