12020112100121 has 4 divisors (see below), whose sum is σ = 12020125467492. Its totient is φ = 12020098732752.

The previous prime is 12020112100049. The next prime is 12020112100159. The reversal of 12020112100121 is 12100121102021.

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 2820653070400 + 9199459029721 = 1679480^2 + 3033061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020112100121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020112100096 and 12020112100105.

It is not an unprimeable number, because it can be changed into a prime (12020112100421) 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, 5229386 + ... + 7168451.

It is an arithmetic number, because the mean of its divisors is an integer number (3005031366873).

Almost surely, 2^{12020112100121} is an apocalyptic number.

It is an amenable number.

12020112100121 is a deficient number, since it is larger than the sum of its proper divisors (13367371).

12020112100121 is an equidigital number, since it uses as much as digits as its factorization.

12020112100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13367370.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12020112100121 its reverse (12100121102021), we get a palindrome (24120233202142).

The spelling of 12020112100121 in words is "twelve trillion, twenty billion, one hundred twelve million, one hundred thousand, one hundred twenty-one".